Twelve years ago, Joanna Anderson captured young Sam’s heart in Love Actually – along with ours.
And it’s hard to believe the girl with the killer voice (how could we ever forget her version of Mariah Carey’s All I Want For Christmas Is You?!) has grown up!
Olivia Olson, now 23, has been carving out a career for herself as a singer and voice-over actress.
She voices Adventure Time’s Marceline the Vampire Queen and Disney cartoon Phineas and Ferb's Vanessa Doofenshmirtz.
Now, go forth and watch her amazing performance again. We’ll never get sick of it!