In case you didn't get a chance to check out or grab some of the fab H&M x Lanvin gear, you're in luck. The H&M on 5th Avenue by Rockefeller has quite a few pieces left in their store. Unfortunately there's nothing for men.
Anyways, the merch is on the third floor in the corner by the fitting room. There are several racks of dresses including the tulle ballerina poofy dress (red and grey), black one shoulder raw edge dress, zebra print trench and a few others.