If you're looking for more details about the dress or the episode in which she wore it, please provide more information, and I'll do my best to assist you!
700 × 420
Source:https://www.glamour.com/story/the-look-for-less-gossip-girls
390 × 280
Source:https://www.pinterest.com/pin/my-style--4081455882200290/
689 × 500
Source:https://www.cambuinfo.com.br/blair-waldorf-orange-red-ruffled-high-low-dress-ll-14896191
2307 × 1600
Source:https://www.xdressy.com/blair-waldorf-orange-red-ruffled-dress-1678.html
638 × 426
Source:https://www.thecelebritydresses.com/blair-waldorf-red-strapless-ruffled-prom-dress-in-gossip-girl.html
1060 × 750
Source:https://www.reddit.com/r/GossipGirl/comments/pmmj8q/appreciation_post_for_blairs_red_oscar_de_la/
700 × 394
Source:https://www.lizdress.com/leighton-meester-blair-waldorf-red-cap-sleeve-formal-prom-dress-gossip-girl.html
647 × 863
Source:https://millyemilia.wordpress.com/2018/08/26/the-only-blair-waldorf-dress-that-ever-mattered/comment-page-1/
414 × 736
Source:https://www.pinterest.com/pin/774900679625861685/
700 × 495
Source:https://www.reddit.com/r/GossipGirl/comments/pmmj8q/appreciation_post_for_blairs_red_oscar_de_la/