Fergie, Simon Pegg, Heidi Klum: Stars celebrate Halloween - pictures

Celebs officially marked Halloween last night, with Heidi Klum throwing her 12th annual party in New York, following her bash in Vegas on Sunday, and spookily-dressed guests included Black Eyed Peas' Fergie, Sex and the City's Kyle MacLachlan and Buffy the Vampire Slayer's Michelle Trachtenberg.

Across the pond, celebrity guests including Simon Pegg and Louis Theroux flocked to Jonathan Ross's annual Halloween party at his home in North London, while others like Pixie Lott hit various London hotspots to celebrate All Hallow's Eve...