Sorority sisters across the country are jumping and yipping as we speak because Idol alum Katharine McPhee has created a new theme song that's, like, totally hot. McPhee teamed up with her House Bunny co-stars Emma Stone and Kiely Williams to put a hip-hop twist on the '80s hit "I Know What Boys Like," complete with rapping. The film's cast, including Anna Faris and Rumer Willis, will debut the video Wednesday on TRL. OMG, we can barely contain our girl shrieks!