McFly are tipped to be one of the biggest bands of 2004.
They're named after a character in cool 1980s movie Back To The Future, they're mates with Busted and they've even toured with them.
But who are the McFly boys?
Boy: Danny Jones
Family: Mum, dad and sister (19 years old)
Fave band: Bruce Springsteen & The E-Street Band or The Who
Fave song ever: Born in the USA or Born to Run
Bad habits: Bite my nails
Describes himself as: Innocent, never stressed, chatty, don't get embarrassed a lot
My motto is: Treat others as you would like to be treated
Boy: Dougie Poynter
Plays: bass, vocals
Family: Mum, sister
Fave band: Blink 182
Fave song ever: Don't Tell Me It's Over - Blink 182
Bad habits: Eating other people's dead skin
Describes himself as: A dark horse
My motto is: What's a motto?
Boy: Tom Fletcher
Family: Little sister
Fave band: The Beachboys
Fave song ever: Fun Fun Fun / Superman (Five for Fighting)
Bad habits: Weeing in swimming pool!
Describes himself as: Honest
My motto is: None
Boy: Harry Judd
Family: Mum, dad, 1 brother (19) and 1 sister (21)
Fave band: The Used / Blink 182 / Beatles
Fave song ever: Hey Jude
Bad habits: I click my fingers
Describes himself as: Lazy and sly
My motto is: Live fast die fun!