In just three weeks, May 5-7, the largest-ever roster of designers and celebrities will come together for Housing Works’ 7th Annual spectacular interior design shopping benefit, Design on a Dime, at the Metropolitan Pavilion in Chelsea. All five of this year’s co-chairs, Iman, Nate Berkus, James Huniford, Charlotte Moss, and Lara Spencer, will attend to raise funds for Housing Works – a non-profit with a mission to end AIDS and homelessness.

Design on a Dime 2011 features 54 of the world’s top interior designers. Each designer will create a room vignette using new, donated merchandise, which is then sold for 50-70% off retail pricing to raise money for Housing Works. Event sponsors include HomeGoods, Valspar Paint and Traditional Home.

“It was an easy decision to get involved with an event like Design on a Dime. The idea that decorating your house can build a home for someone else is just fantastic,” said Iman, who is collaborating with Robert Verdi to create her dream boudoir featuring original artwork from David Bowie.

Nate Berkus echoed Iman’s comments: “Many New Yorkers know Housing Works as a great thrift store. But, their mission is a serious one, providing care and community for those suffering with HIV/AIDS. I am honored to join them for Design on a Dime, to raise funds and awareness for the good work they do.”

Design on a Dime 2011 benefits Housing Works’ Jefferson Avenue Residence Project, a new housing development consisting of 12 permanent units of supportive housing for single, formerly homeless adults living with HIV/AIDS.

Other 2011 notable design highlights: The design duo Tilton Fenwick will partner with event sponsor Traditional Home to create a fictional design bloggers’ home office complete with a new white iPad 2. MTV Networks’ Yetta Banks will build her ultimate fantasy walk-in closet. If you’re in New York at the beginning of May, you’ve got to check it out: