Name: Kelly Rowland
Occupation: Singer/actress/Beyonce's best buddy.
Most famous for: Being one third of the fiercest girlband of all time.
You may not know… Kelly's full name is Kelendria Trene Kamasia Rowland. We're tired just typing that!
[See also: X Factor is ready for lift off]
[See also: Tulisa's X Factor make-over]
[See also: The X Factor judges]
In her own words: "I can hardly talk to Gary (Barlow) without blushing. He is sooo handsome, and sooo charming."
Our prediction: Kelly looks set to bring bucket-loads of sassiness to the show. Plus, anyone who commands us to dance is a winner in our eyes.