Elizabeth Anna Halcyon "Beth" Littleford (born July 17, 1968) is an American actress, comedienne, and television personality. On Disney media, she is known as Tripp's mother Beth Campbell from the Disney XD show I'm in the Band and Avery's mother, Ellen Jennings in Disney Channel's Dog With a Blog. She also appeared in the Disney Channel Original Movie StarStruck as Barbara Olson, the ABC TV show Mistresses as Lindsay Lehman, Desperate Housewives as Dana and the 1999 Hollywood Pictures film Mystery, Alaska as Janice Pettiboe. She also did various voices in Kim Possible , Milo Murphy's Law and Phineas and Ferb.