What was the song on the Hills and So You Think You Can Dance?!

I really hope that someone can help me out here!. I first heard the song on So You Think You Can Dance, it was done in a routine with Chelsea Trails (hope I didn't spell that wrong) and Thayne!. I think it was choreographed Mandy Moore and the storyline was that they were like royalty or something!. And now I have heard it again on The Hills, episode #2 of season 4!. t is playing while Lauren, Lo and Audrina set out to Stephanie's birthday party!. Please help I love this song but I have no idea what it is called or who it is by!. Thanks so much! <3Www@Enter-QA@Com

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