Olivia Rose Olson (born May 21, 1992) is an American actress and singer-songwriter, mostly known for her voice roles as Vanessa Doofenshmirtz in Phineas and Ferb and Marceline the Vampire Queen in Adventure Time. She also played the character of Joanna in the 2003 film Love Actually and its 2017 short sequel Red Nose Day Actually.
Cartoon Sing-Along Songs: Wreck-It, Wreck-It Ralph
Songs: "Find the Music in You" (My Little Pony: Friendship is Magic), "Rebel, Let's Go" (Phineas and Ferb: Star Wars), "Wreck-It, Wreck-It Ralph" (Wreck-It Ralph), and "Shine Supernova" (Escape from Planet Earth).
