Where's the party? It's in Pippa's pants!
The younger sister of our beloved Kate Middleton had a pretty raucous time in London on Thursday night, going from Loulou's bar to the Groucho Club in a matter of hours.
The best thing about this ensem is that Pips could've left the Groucho Club for a pajama party without having to make any wardrobe changes.
[Image via WENN.]