Catherine Elizabeth "Cat" Deeley (born 1976) is a British celebrity, TV presenter, actress and model. From 1998 until 2001, she co-hosted the children's series SMTV Live alongside Ant & Dec and continued alone until 2002. She also hosted Stars in Their Eyes from 2004 until 2006. Since 2006, Deeley has also been the host of So You Think You Can Dance in the United States, for which she received a nomination for the Primetime Emmy Award for Outstanding Host for a Reality or Reality-Competition Program, As of 2008 She is also the Host of So You Think You Can Dance (UK) and she is the face of Pantene shampoo in the UK.
On 9 January 2011, Deeley made a small guest appearance in the Disney Channel sitcom, Shake It Up where she portrays a vice principal who is, in secret, a dancer.
In April 2011 Deeley appeared on CNN's Icon and spoke to Nancy Cartwright. Together they did The Bartman.
In June of 2011, Deeley launched her own "behind-the-scenes" web series, produced by Deeley, Yahoo! and Collective Digital Studio. A 20-episode twice-weekly short form series entitled "In the Dressing Room", the show follows Cat as she shares her inspiration for her "look" and gets ready before she goes live on So You Think You Can Dance. The show is promoted on OMG! and throughout the Yahoo! network.
On August 18 of 2011, Cat Deeley appeared on "Live with Regis and Kelly", as a fill in for Kelly.