Alyson Stoner (born August 11, 1993, in Toledo, Ohio) plays Isabella Garcia-Shapiro and Jenny on Phineas and Ferb. Besides this, she is perhaps best known for playing Sarah Baker (one of the twelve children) in Cheaper by the Dozen and its sequel Cheaper by the Dozen 2. And finally, co-starred in "Camp Rock" a Disney Channel original movie with Demi Lovato and Joe Jonas. She had a recurring role on The Suite Life of Zack and Cody as Max. Alyson was also the co-host of the Disney Channel's Mike's Super Short Show, an infomercial segment that sells upcoming DVD and Video releases of Disney features. Alyson Stoner also starred in Step Up 3. Also, Stoner starred in the movie Alice Upside Down, in which she plays the lead role of Alice McKinley.