Disney darling and "Lab Rats" star Kelli Berglund makes her way to the YH Studio to give us the scoop on her Disney Channel original movie 'How to Build a Better Boy' and chat about everything from her personal style to her biggest celeb crush! She also shares her opinions on selfies, plus she reveals what music she is digging the most these days! "How to Build a Better Boy" premieres Friday, August 15 (8:00 p.m., ET/PT) on Disney Channel.