Susan Sarandon is adding star power to The Body Shop’s latest installment of its Stop Sex Trafficking Campaign.

The retailer will launch a petition drive in the United States today to spread awareness and support for legislation that would help end the sex trafficking of children and young people worldwide. Stores will urge visitors to sign the petition, and a Web site link will allow anyone to sign electronically.

Uma Thurman, Yoko Ono, and Sienna Miller have also signed the petition and created self-drawn hand traces for colorful signage that will go up in stores.

In addition, The Body Shop will continue to donate proceeds from their popular Soft Hands, Kind Heart Hand Cream and Bag for Life products to ECPAT (End Child Prostitution and Trafficking) and the Somaly Mam Foundation, for both of which they’ve already raised over $1.5 million.