ORLANDO, Fla. -- Ozzy Osbourne has conquered it all.

This rock 'n' roll rebel pioneered the heavy metal revolution, became a reality TV star (of the Emmy-winning "The Osbournes") and has even been invited to the White House -- turning a passion for music into a rock empire.

Now, the "Godfather of Heavy Metal" is taking on Hard Rock International to become the hardest rocker yet in the company's Signature Series. Hard Rock this week unveiled its latest Signature Series T-shirt, designed by the "Ironman" himself, Ozzy Osbourne.

Proceeds from the new Ozzy Osbourne T-shirt benefit the Sharon Osbourne Colon Cancer Program at Cedars-Sinai Medical Center, established by Ozzy's wife Sharon following her own battle with colon cancer. Ozzy Osbourne, the 22nd rocker to become part of Hard Rock's Signature Series T-shirt program, joins music icons and legends, such as Elton John, Eric Clapton and Bruce Springsteen, helping to raise millions of dollars for a number of charitable causes worldwide.

The Signature Series T-shirt Edition XXII features a hand-painted stick figure, symbolizing Ozzy's larger-than-life stage persona.

The design, created by Ozzy Osbourne, is set on a black T-shirt for men and is also available in an ivory ladies "junior baby-doll" T-shirt. Hard Rock International is offering Ozzy fans the chance to own the limited-edition T-shirt, which is now available online and will be officially launched in the Rock Shops at Hard Rock Cafes, Hotels and Casinos in the U.S., Europe and Canada this summer.

"Most people know Ozzy as the outrageous, envelope-pushing rocker, but underneath the wild exterior lies a heart of gold," said Sharon Osbourne. "We contribute to several causes and Ozzy is extremely supportive of the mission of this Colon Cancer Program. And we are thrilled to partner with Hard Rock for this life-saving effort."

Inspired by the care that she received, Sharon Osbourne joined forces with the Cedars-Sinai Medical Center to provide support for those afflicted with colon cancer. Established in 2004, the Sharon Osbourne Colon Cancer Program funds sponsored care and financial assistance to those in need, specialized care and treatments for colon cancer patients at Cedars-Sinai and elevated awareness and education for patients, families and communities.

Since it was established in 1971, Hard Rock has been committed to a wide variety of philanthropic causes and activities around the world.

In 1990, Hard Rock International developed the concept of partnering with world-renowned musicians and bands, who create and donate imaginative designs to be reproduced onto T-shirts to benefit the artist's charity of choice.

To date, 22 music superstars have participated in the Signature Series program, including Eric Clapton, Elton John, Sting, Michael Stipe and Bruce Springsteen, raising millions for a wide variety of organizations, such as Crossroads Centre Antigua, the Elton John AIDS Foundation and World Hunger Year.

This year, Hard Rock is also offering the new Ozzy Osbourne Signature Series T-shirt, as well as the popular Bruce Springsteen and Eric Clapton Signature Series T-shirts, in men's and women's styles.