Anya is wearing a leather jumpsuit from the 3.1 Phillip Lim resort 2013 collection.
You can see it at Net-a-porter :
lookbook picture credit : 3.1 Phillip Lim
You can preview the Net-a-porter spring summer 2013 lookbook and pick up the pieces you're interested in. You will be notified as soon as they arrived.
You just have to login to your account page and then select "My Lookbook".
If you don't have an account, you just have to register to be sure you won't miss any new item.