Here's a puzzle: what do you get if you put Roo Panes in a room with Josh Flowers  Dawn Porter  Tim Walker and a tower of blow-up panda heads? Jimmy Choo's dinner for Rob Pruitt  of course! Rob's first collection for the brand is about to launch  so Sandra Choi and Simon Holloway threw him a huge party at Belgrave House  during which Roo and Dawn displayed impressive lung power (their panda heads were remarkable) and Caroline Issa chatted to Miss Pandemonia