Alanna Ubach is an American actress. She is known for her roles as Serena McGuire in Legally Blonde (2001) & Legally Blonde 2 (2003), Isabel Villalobos in Meet the Fockers (2004), Maria in Sister Act 2: Back in the Habit (1993), Noreen in The Brady Bunch Movie (1995), Jane in Clockwatchers (1997), Naomi in Waiting... (2005) and Still Waiting... (2009), Margarete in Being Us (2011), Jeanine Pirro in Bombshell (2019), and the voice of Mamá Imelda in Coco (2017), as well as Jo Hernandez-Frumpkis on Girlfriends' Guide to Divorce, Suze Howard on Euphoria, Amy Hobbs on See Dad Run, Tessa Flores on Guilty Party, Carol Atkinson on The Flight Attendant, and Susan Bennett on Ted.

Legally Blonde is a 2001 American romantic comedy film directed by Robert Luketic and written by Karen McCullah Lutz and Kirsten Smith, based on Amanda Brown's 2001 novel of the same name. It stars Reese Witherspoon, Luke Wilson, Selma Blair, Matthew Davis, Victor Garber, and Jennifer Coolidge. The story follows Elle Woods (Witherspoon), a sorority girl who attempts to win back her ex-boyfriend Warner Huntington III (Davis) by getting a Juris Doctor degree at Harvard Law School, and in the process, overcomes stereotypes against blondes and triumphs as a successful lawyer.