Olivia Rose Olson, credited as Olivia Olson, was born and raised in Los Angeles, California. Her father is Phineas and Ferb writer and songwriter Martin Olson. She has appeared as a singer and actress on many television shows and has performed live in many Hollywood theaters, including The Comedy Central Stage, The HBO Theater and The Fake Gallery.
She was a semi-regular cast member of Phineas and Ferb and voiced Vanessa, the sarcastic daughter of Dr. Doofenshmirtz. She also sang many songs, and provided the guide track vocals for Candace's songs.
She has written songs for Phineas and Ferb, has written and recorded her songs with renowned music producers Rick Nowels, Camara Kambon and Hollywood jazz great Rob Mullins, and for fun performs many of her original songs in YouTube videos: Sunny, Loving You And Me, Your Friend, Suspicious, and Sick N Tired. Her new extended play album, Beauty is Chaos is available on iTunes now. 
At age ten, Olivia appeared in the British film Love Actually with fellow Phineas and Ferb voice actor Thomas Sangster, singing the song "All I Want for Christmas is You". According to director Richard Curtis' commentary in the Love Actually DVD, Olivia's singing was so perfect, they were afraid the audience would not believe that a ten-year-old could really sing the way she did. They had to train her so that her singing would sound more believable.
Olivia also voiced the popular character Marceline the Vampire Queen in the cartoon Adventure Time.
Songs in Phineas and Ferb
As Vanessa Doofenshmirtz
In the show
- "Busted" (with Candace Flynn)
- "I'm Me"
- "Not So Bad A Dad"
- "Lookin' for Books"
- "Vanessa's Song"
- "Ducky Momo Theme Song"
- "I'm Feelin' So Low"
- "Rebel, Let's Go!"
Only in CD
As Olivia Olson
- "He's Eviler" (chorus)
- "Queen of Mars"
- "That Christmas Feeling"
- "Moon Farm" (with Dan Povenmire)
- "Real Boy" (chorus)
- "I Walk Away"
- "Happy New Year"
As Other characters
- "Ready for the Bettys" (as Crash)
- "I'm Lindana and I Wanna Have Fun!" and "Foot Stomp Mash Up" (as Lindana)
|The image gallery for Olivia Olson may be viewed here.|
- Olivia Olson at Wikipedia
- Olivia Olson at
- YouTube channel
- Olivia Olson - Video Excerpts
- "Not So Bad a Dad" by Olivia Olson
- "Busted" by Olivia Olson and Ashley Tisdale
- Mom It's Your Birthday Demo sung by Olivia Olson