Olivia Olson

Olivia Olson (born Olivia Rose Olson; May 21,992 1 in Los Angeles, California) is an American actress, voice actress as and singer-songwriter known for her role as Joanna singing "All I Want for Christmas Is You" in Love Actually (2003) and for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Milo Murphy's Law in addition to her as Marceline the Vampire Queen in Adventure Time. Olivia is also a writer for a variety of books.

Voice roles in Idea Wiki

 * Crystal Universe 8 - Kimberly Price
 * Livin' the Life with the Stereotypes - Mayor Faith Hughes
 * Kingdom Hearts series - Vanessa Doofenshmirtz, additional voices


 * Ryan & Beth - Eve
 * The Dynamic Girls - Diva Psych
 * The Good Guys - Alien Gal
 * Best Beasties - Jennifer Raven (season 1 only)
 * DC vs. Sega - Wonder Woman