Alanna Ubach started her acting career at a young age. When she was still in her teens, Ubach appeared in her first TV show, the Disney sitcom "The Torkelsons". She is best remembered by children of the 1990s, however, for her role as mad-but-informative scientist Beakman's first assistant on the educational television show "Beakman's World". Ubach next branched out into more and varied television roles, including small parts on primetime dramas like "L.A. Law" and "ER". She also began to do more movie work in the 1990s, appearing in the comedies "Sister Act 2: Back in the Habit" and "The Brady Bunch Movie". Ubach's visibility increased further in the early 2000s with continued television appearances, including stints on the Aaron Sorkin projects "Sports Night" and "The West Wing". Her movie roles ultimately gave her even more attention, with memorable turns in "Legally Blonde II" (as sorority girl Serena) and "Meet the Fockers" (as Ben Stiller's ex-babysitter, for which she wore a fat-suit). In the latter part of the 2000s Ubach also branched out into voice acting, lending her talents to animated shows like "The Spectacular Spider-Man" and "El Tigre: The Adventures of Manny Rivera".