By Adam Markovitz
Updated February 11, 2010 at 04:19 PM EST

Image Credit: Mike Marsland/WireImage.comBritish fashion designer Alexander McQueen (né Lee McQueen), whose cutting-edge dresses were worn by stars like Madonna, Gwyneth Paltrow, and Lady Gaga, was found dead in his London home this morning. He was 40 years old. “At this stage it is inappropriate to comment on this tragic news beyond saying that we are devastated and are sharing a sense of shock and grief with Lee’s family,” reads a message on the official website of the designer’s company. Rumors have begun to circulate online, but officials say the the cause of death remains unknown. “We’re devastated and I hope you understand that out of respect to his family and his colleagues we’re not going to be making any further statement,” said the designer’s spokewsoman in a statement.

McQueen rose to fame in the ’90s, earning a reputation for his impeccably tailored avant-garde looks and iconoclastic fashion shows. He got a relatively traditional start on Savile Row, designing for Givenchy before creating his own label under the Gucci umbrella in 2001. McQueen’s designs were red-carpet regulars, especially on Sarah Jessica Parker, Kate Moss, and Naomi Campell. A few of McQueen’s most famous works include Gwyneth Paltrow’s see-through 2002 Oscar dress and the “armadillo” shoes worn by Lady Gaga in her 2009 “Bad Romance” music video.

Since his death was announced earlier today, several celebrities have taken to Twitter to pay tribute to the designer.

DitaVonTeese: “Rest in peace, Mr. McQueen.”

Joel Madden: “R.I.P. Alexander McQueen. You were one of the best man. Always hoped to meet you.”

Kelly Osbourne: “i am so so sad to hear the news of Lee (Alexander) McQueen! i really just dont know what say im really in shock”

Kim Kardashian: I just found out Alexander McQueen died!!! I’m in shock! So sad! I’m wearing one of his dresses now! He was such a talented designer”

Kirstie Alley: ALEXANDER MCQUEEN…you made big bottomed and not so big bottomed girls all over the world look stunning..come back soon..give it another go”

Rachel Zoe: “I cant describe the tragic loss of such a brilliant man and designer Alexander McQueen..R.I.P xo RZ”

Tyra Banks: “RIP Alexander McQueen. so so sad. such a huge loss. He was one of my favorite designers. He will be missed.”

More Alexander McQueen: