Mandy Moore October 3, 2007

Since 1999, Mandy Moore has sold more than 7 million albums, thanks to hits like 'Candy,' 'I Wanna Be With You' and 'So Real.' Among other notable accomplishments: At the age of 16, she became the youngest host on MTV with her own show that ran for two seasons; at 17 she won the MTV Movie Award for Breakthrough Performance for 'A Walk to Remember,' and she has several movie roles on her resume, including 'Saved,' 'The Princess Diaries,' 'Chasing Liberty' and 'License to Wed.' She's touring behind her her newest album, 'Wild Hope.' Rachael Yamagata was formerly the lead vocalist of a funky group called BUMPUS.