(Cover) - EN Star Style - Ashley Greene has donated some of her greatest red-carpet outfits to help young girls in need of a prom gown.

The stunning actress is best known for her role in the Twilight movie franchise and tries to use her celebrity for good whenever she can.

Ashley is returning for the third year as the official representative for DonateMyDress.org, a US campaign encouraging girls to contribute their used dresses so that youngsters from low income families can get the chance to wear them for special occasions such as their high school prom.

The star always looks immaculate on the red carpet and has donated many of her favourite frocks, including the beautiful white Lela Rose gown she wore at last years ninth Annual Chrysalis Butterfly Ball.

The actress was eager to be involved in the campaign again as it is an issue she holds close to her heart. As a teen, Ashley recalls taking on extra work in a bid to be able to afford her dream prom dress.

In high school, I had to work several jobs to save enough to buy a prom dress, she said in a statement. It was so worth it: I had a blast at prom! Every girl should have the chance to have that experience. (C) Cover Media