Riley, who plays Mercedes on the hit...
The talented star will front a Facebook.com group aimed at giving teen girls courage, support and advice on how to deal with hurtful comments and behavior from bullies and mean girls.
She says, "I know the challenges that young women face, mean behavior being one of them, and I want to stand strong against bullying by encouraging women to be nice and elicit positive change.”
Riley will also step in front of the camera for a number of print adverts.