Catherine Elizabeth "Cat" Deeley (born October 23, 1976) is a popular English disc jockey, television personality and former fashion model, who rose to fame at the age of 21, co-hosting the well-known children’s series SMTV Live, alongside Anthony McPartlin and Declan Donnelly. Most recently, she replaced Lauren Sanchez as the host of So You Think You Can Dance, and is doing more work in the United States.