Date of Birth: 23 October 1976

Place of Birth: Birmingham, England

Occupation: Television Presenter, Model, Former DJ.

Marital Status: Single

Cat Began her career as a model and a very succesful one. She entered a regional BBC competition called The Clothes Show, where she made it through to the finals. She was spotted by an agent, and Deeley signed with the Storm modelling agency, where Kate Moss was also on the roster. Deeley left modelling after two years and became an MTV UK presenter in 1997. She usually co-hosted with Edith Bowman, with whom Cat is very good friends.From 1998 to 2002, she was co-host with Ant & Dec on the Saturday morning children's show SMTV Live and also hosted its spin off shows CD:UK. In Britain she has also presented Fame Academy, 2004 Brit Awards, Stars in Their Eyes and many more.

She also did a radio slot for Capital Radio and BBC's Choice radio. In 2003 she became patron of Great Ormond Street Hospital, and in 2005 she played herself in an episode of Little Britain and provided the voice of "Loretta Geargrinder" in the UK version of the film Robots.

In late 2005 she began the crossover to American television , hitting the ground running and presenting American Idol. Since 2006, she began hosting the second season of American reality show So You Think You Can Dance, replacing Lauren Sanchez, who was pregnant at the time. Deeley has also interviewed Kylie Minogue for a television special which aired in the United Kingdom on Sky One on 16 July 2006, in Australia on Channel Nine on 17 July 2006 and BBC America on 9 September 2006. Deeley also had a stint as a guest reporter on NBC's Tonight Show around this time. On December 31st 2006, Deeley presented Fox's New Year's Eve special live from Times Square. She is also an entertainment contributor for ABC News, providing coverage from various awards shows including the Golden Globes and the Grammy and Academy Awards.