Well-groomed Gavin is a Rugby sensation, bagging Grand Slam victories for Wales in 2005 and 2008.
He has played a variety of positions, including fly-half, fullback and inside centre.
He's frequently in the press for both his injuries and his private life - particularly his 5-year relationship with singer Charlotte Church.
Check out the competition below;
Ann Widdecombe
Felicity Kendal
Goldie
Jimi Mistry
Kara Tointon
Matt Baker
Michelle Willams
Pamela Stephenson
Patsy Kensit
Paul Daniels
Peter Shilton
Scott Maslen
Tina O'Brien
Tagged in Strictly Come Dancing