Kate Hudson, January Jones and Zoe Saldana have also stripped off for a good cause.
Lesbian, bisexual and trans women face a number of serious health inequalities. And the most worrying thing is no one seems to know about it.
Sexually transmitted infections (STIs) are at a record high in the UK according to the latest official figures. One of the most common, chlamydia affects up to one in ten sexually active young people (most instances are in people aged 24 or