Click on the photo below to see gallery of stars in their spooky costumes
Kate Moss, Holly Willoughby, Millie Mackintosh and Nicole Scherzinger were among the celebrities attending Jonathan Ross's annual Halloween party on Thursday evening.
Claudia Winkleman, Dara O'Briain, Dermot O'Leary and Gary Linekar also transformed themselves into creepy characters for the spooky event at the ITV chat show host's home in Hampstead, London. Click on the photo below to see the celebrities donning their best fancy dress.
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As usual, their host had thrown himself into the preparations. His property had been converted into a ghoulish castle, featuring cobwebs and gargoyles on the exterior walls.
And as the witching hour drew closer, Jonathan emerged dressed up as Jareth from the 1986 fantasy film Labyrinth — a role played by his idol, David Bowie.
Supermodel Kate and her husband Jamie Hince paid tribute to Mexico's Dia de Muertos national holiday, arriving dressed as skeletons as they embraced the cultural theme.
Newlyweds Millie Mackintosh and Professor Green were almost unrecognizable as they stopped by the party as Morticia and Gomez Addams from The Addams Family.
And X Factor host Dermot O'Leary took a light-hearted approach to proceedings; he and his wife Dee dressing up as designer Karl Lagerfeld and his beloved cat Chupette.
Click on the photo to see the gallery