Christa Brittany Allen (born November 11, 1991) is an American actress best known for her role as the younger Jenna Rink in the 2004 movie 13 Going on 30. Allen was born in Wildomar, California. She is the youngest of five siblings, with four elder brothers as well as four elder stepbrothers. Before her role as Jenna in 13 Going on 30, Allen had done a short appearance on The Man Show, several students films, and several commercials. She starred as the titular character in the CBS Saturday morning TV series Cake.
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