Lots of celebrities were bumping around furiously in the night at Jonathan Ross's wip woawing Halloween party.

Given it appears that only half of the rather large gallery has come equipped with captions - kind of a necessity when costumes are involved - we're going to demystify the game of 'Guess Who.'

Let's kick things off with this cockroach. It's obviously Jack Whitehall. This here blonde with Danny Baker is not Kate Thornton, it is in fact his daughter (we're being led to believe). The Count is one Mr. Frank Skinner. This arbitrary ghoul is not Taylor Momsen, it is in fact Chloe Grace Mortez. Now, this one is tricky. I'm going to say Bryan Ferry. Proving that blondes do indeed have more fun is Holly Willoughby. The pirate Rastafarian is her husband Dan Baldwin. Not sure what Daisy Lowe came as, either a rug, Edwardian wall paper, or Dita Von Teese. Here's Gary Linekar with the Mrs, here’s Gary Linekar's son; Kate 'Morticia' Moss and Jamie 'Gomez' Hince; Stephen Fry (I'd like to say I know who he's come as, but I don't); while No Doubt heard it was fancy dress at the last minute so they got busy with some cunningly placed lipstick and the next thing you know they're half the cast of Grease. The same pretty much goes for Helena Bonham Carter and Tim Burton, but they just happened to have a mask and some cat ears hanging about their glove compartment.

Now on to some of the trickier ones. This is Mark Ronson… pretending to be Paul Simon? Mr. Voodoo features is Nick Grimshaw (who's probably well tired today). And this yeti is none other than Simon Pegg. You'll just have to take my word for it.