Last night Ashlee Simpson celebrated the Missoni for Havaianas flip flop collection in LA wearing a beautiful bohemian look: this FP One limited-edition crochet maxi dress ($250) with Missoni for Havaianas flip flops ($70) and a floral headband she picked up at a flea market — here's a woven floral headband from Tilly's ($9) to re-create her look. We got a chance to catch up with the singer-slash-designer about her personal style, so stay tuned for that. In the meantime, shop her exact maxi and flip flops for all your upcoming Summer rendezvous. Pair them together like Ashlee did or wear your crochet maxi with black caged booties for an edgier feel. And don't forget to throw your Missoni for Havaianas flip flops in your beach bag.