Catherine Elizabeth "Cat" Deeley (born on October 23, 1976) is an English television presenter, actress, singer and model. Since 2006, Deeley has been the host of So You Think You Can Dance in the United States, for which she received four nominations for the Primetime Emmy Award for Outstanding Host for a Reality or Reality-Competition Program.
She hosted the 7th season of the U.S. version of Who Wants to be a Millionaire as a guest host between February 16-20, 2009.