CLOSING SALE | UP TO 80% OFF
Onyx | Square Neck Short Sleeve Plain Black Mini Dress
★★★★★ 4.8 based on 4,000+ reviews

Onyx | Square Neck Short Sleeve Plain Black Mini Dress

Regular price $100.00 Sale price$45.95 Save 54%
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CLOSING SALE ENDS TODAY
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Minimalist perfection in classic black.

A square-neck short-sleeve mini dress in a clean, simple black — understated, versatile, and always right. The square neckline adds a modern touch to this wardrobe essential that dresses up or down with ease.

  • Style: Plain square-neck mini dress
  • Fit: Relaxed / easy
  • Perfect for: Everyday wear, casual dates, evenings out

Hand-picked by Tessa for 27 years in San Francisco. Part of our Moving Sale — up to 80% off. Once this style is gone, it's gone. Tessa won't be reordering from San Francisco.

Onyx | Square Neck Short Sleeve Plain Black Mini Dress

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Riri's Guarantee

Personally chosen for you. 30-day money-back guarantee — because we want you to love it.

OVER 4000+ CUSTOMERS LOVE RIRI'S PIECES 💗

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

"I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️" "I've been shopping with Riri for years, and her dresses and blouses have always been beautiful quality and so comfortable to wear. It's heartbreaking to see her boutique closing after all these years. ❤️"

"My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!" "My order arrived quicker than expected, and everything was beautifully packaged! The dress fits perfectly, feels lovely, and looks even better in person. So pleased with my purchase!"

"I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️" "I was a little nervous ordering online, but I'm so happy I did! My dress arrived beautifully packaged, and Riri even included a sweet little thank-you note. ❤️"

"I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️" "I wasn't sure which size to order, so I reached out to customer service and they were so lovely and helpful! My pullover arrived a few days later and fits perfectly. It's honestly become my favourite thing to wear! ❤️"

"I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️" "I got the loveliest two-piece set for 70% off, and I'm absolutely delighted! It fits beautifully, feels so comfortable, and I've already had so many compliments. What a bargain! ❤️"

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