"Every little girl says 'I want to be like Mom when I grow up, but I actually really do want to be just like my mom," Ava Sambora, 14, tells PEOPLE of following in her mom's acting and modeling footsteps. Recently cast in a new Judd Apatow film, the young star has the go-ahead from her newly engaged mom (dad is ex-husband Richie Sambora). "I always say I want to come back as Ava Sambora," says Locklear. "She has such confidence."