Sydney Sweeney 2023 Met Gala Sparkly Mermaid Long Train Dress. Sydney Sweeney in this long train mermaid dress scattered with shimmery sequins attends the 2023 met gala celebrating. This celebrity dress features beaded spaghetti straps, low square neck, open back sleeveless bodice, black bowknot adds extra to this stunning piece. shown color coral bra support with cups boning yes closure back zipper lining fully lined