Girls Aloud star Nicola Roberts has urged her young fans to be wary of sexual predators, and she's backing a charity to help children who have been exploited.
The singer has joined Dame Helen Mirren and Brenda Blethyn by lending her support to Barnardo's Cut Them Free campaign, which aims to protect young children from sex abuse and prostitution.
In a post on Twitter.com, she writes, "Sexploitation is a hidden danger... Make sure you know how to keep safe."