Here are some of my favorites that I found online.
From the top left: Topshop,. Forever21, Forever 21, Black Halo @ shopbop.com, Miss Sixty,Topshop, Bardot Fashion Australia, Topshop, Topshop, Topshop
I love the 70s feel that these have. And the great thing about playsuits is that you can wear them with pretty wedges, which makes dancing all night a little less painful.