Sharon Osbourne, Simon Pegg, Helena Bonham Carter, Seth Rogen and Boy George are among celebrities supporting the Hats Off To Research fundraising campaign, by donating their favourite headwear for an auction to boost funds for Alzheimer's Research UK.

Hilary Evans, Director at Alzheimer's Research UK, said 'The response from celebrities to our first ever Hats Off To Research auction has been fantastic; we can't thank them enough for donating their hats to support vital dementia research. From wizard hats and Panamas to helmets and beanies, there's a great mix of headwear going under the digital hammer'. The online auction runs until May 23 at www.hatsofftoresearch.org.