See the "Love Actually" Cast 20 Years After the Christmas Movie's Release

Olson blew everyone away when she played a young Joanna who belted out Mariah Carey's "All I Want for Christmas" at the age of 10 at the crescendo of "Love Actually."

Olson went on to voice the recurring character of Vanessa in the Disney animated series "Phineas and Ferb" alongside her "Love Actually" costar Brodie-Sangster. She has also recorded a number of albums and competed on "The X Factor: Celebrity" in 2019.