ASHLEY Tisdale wants to be just like her mom. The High School Musical actress says her mother Lisa is her perfect role model. I never really looked up to celebrities when I was young, she says. My mom is very confident and she was always a role model of mine. I definitely work hard at stuff. I never give up on things. If Im gonna do something, Im gonna go a hundred percent into it - just like my mom. Tisdale, 24, recently revealed that Julia Roberts inspired her to get into movies. My Best Friends Wedding was a big movie for me - Julia Roberts is what made me go, 'I want to do movies for sure, she said. I grew up in the business since I was three years old so Ive always kind of been in front of the camera and grew up in commercials and I knew that I wanted to do it no matter what, I just loved it. SS