Liliana Berry Davis Mumy (born April 16, 1994) is an American actress. Her most notable roles are as Jessica Baker in the Cheaper by the Dozen movies with Steve Martin, Lucy Miller in The Santa Clause 2: The Mrs. Clause & The Santa Clause 3: The Escape Clause with Tim Allen, Mertle Edmonds on the Disney Channel original series Lilo & Stitch: The Series, Panini on the Cartoon Network original series Chowder and Wadi on another Cartoon Network original series The Secret Saturdays.