576 × 768
Source:https://www.theknot.com/content/what-to-wear-formal-black-tie-optional-black-tie-invited
3000 × 2000
Source:https://www.vogue.com/slideshow/black-tie-wedding-guest-dresses
1024 × 683
Source:https://www.thedressoutlet.com/
1540 × 1540
Source:https://www.etsy.com/market/after_five_dresses
400 × 400
Source:https://www.freeup.app/product/Three-Piece-Dress/1146359282460496896
500 × 500
Source:https://m.indiamart.com/proddetail/ladies-designer-three-piece-dress-21862399797.html
760 × 570
Source:https://www.etsy.com/listing/921472158/mexican-dress-3-piece-set-skirt-with
350 × 287
Source:https://www.amazon.com/Mother-Pieces-Evening-Dresses-Wedding/dp/B0CPPSWMLR
2000 × 1405
Source:https://www.dollskill.com/products/fang-and-majesty-3-piece-dress-set
1266 × 1900
Source:https://www.net-a-porter.com/en-us/porter/article-269f5890f6dfe2a5/fashion/fashion-memo/best-dress-guide