Jessica Alba has lent her support to Revlon and In Style for the Rainbow Trust, a childrens charity for kids with terminally ill or life threatening illnesses.
Jessica, Revlon and In Style are offering supporters the chance to win a Chloe bag signed by the Hollywood film star.
Through November Revlon will donate a percentage of their profits to the Rainbow Trust childrens charity.
And celebrities including Keira Knightley, Elle McPherson, Claudia Schiffer, Thandie Newton, Sharon Osbourne and Eva Green will also help the Rainbow Trust, by auctioning their handbags at a special charity champagne tea on November 4.
Join Jessica Alba, Revlon and In Style at instyle.co.uk/Revlon in November to support the Rainbow Trust and find out how you can win.