Bill Kaulitz was born 1 September 1989 in Leipzig, East Germany, ten minutes after his identical twin brother Tom.  At the age of ten the brothers began performing live in Magdeburg, near their hometown of Loitsche, under the pseudonym Black Question Mark but the year Bill and Tom turned twelve, everything changed.In the audience at one of their shows were Georg Listing and Gustav Schäfer who after enjoying Bill and Tom's show made an offer to join."Devilish" became Tokio Hotel!

In September 2009, Bill Kaulitz was chosen by fashion legend Karl Lagerfeld to take part in a photo shoot for the 30th birthday of Vogue (magazine) in Germany. Karl Lagerfeld described him as "The Other Idea of a German" and wrote that the 20-year-old singer with the unusual styling became a superstar; and a fashion icon.

While in October 2009, Kaulitz was #11 on German magazine GQ's Best Dressed list. They cite his flamboyant style as one of the reasons he was chosen, as well as his liking to change and try new things. Designer Michael Michalsky supported his decision by saying: “Bill Kaulitz is unique and uncompromising, Pop-Art brought to life. He likes to change – that is fashion.” For the Dsquared2 Fall/Winter 2010 fashion show, Bill opened and closed the show while the song "Screamin'" from the album "Humanoid" played in the background.

Source wikipedia