As for the dress, she told Cosmopolitan.com that there's a sweet story behind the eye-catching ensemble.

\"We were pretty deep into the [dress] design, myself and this wonderful tailor here in New York, and then H&M called and they said they have this initiative called Conscious Collection, where they use sustainable fabrics.\"

She added, \"They reuse fabric and vintage pieces and organic cottons. So I said, 'Look, this is where I am in the process, how do you feel?' And they basically dug up every piece of old fabric they could find in Sweden, and it's all been incorporated into this. And I knew I wanted poppies all over, and so we found somebody in New York to hand-embroider all these.\"

@bravoandy/Met Gala = standing date. Dress designed by me in collaboration with @hm. Headpiece by @philiptreacy. Custom @sjpcollection shoes. Jewelry by #fredleighton, @jfisherjewelry and @cindychao_artjewel. Bag by @fendi. @bravoandy in @ralphlauren. X, Sj #ChinaThroughTheLookingGlass

A photo posted by SJP (@sarahjessicaparker) on May 4, 2015 at 3:43pm PDT

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