The Jonas Brothers, David Arquette and Chris Brown are among the stars who have unleashed their wild sides to raise money for an Alzheimer's charity.
Actresses Leighton Meester, Dakota Fanning, Gabourey Sidibe and Anne Hathaway have also lent their support to The Elephant Project, an organisation to raise cash and awareness for the Alzheimer's Association.
The stars have all posed with a stuffed toy elephant and special signed Elephant Project cards, which have been put up for sale on auction website
The 41 celebrity auctions are available to bid on until 8 December (10).