The ONEXONE Portrait Gallery in the Diesel Lounge from Toronto 2008

Even with the non-stop whirl of press conferences, premieres and parties, the stars at the 2008 Toronto Film Festival are taking time out to stop by the ONEXONE portrait studio, hosted by InStyle.com and Diesel. Shot by renowned photographer Raphael Mazzucco, each portrait will be auctioned off to support ONEXONE, an organization-which counts Matt Damon and Wyclef Jean among its ambassadors-that funds programs to improve the quality of life for children around the world. "All of the celebrities have come in with such a positive vibe and enthusiasm," says Mazzucco. "They're here to do their part."

JESSICA BIEL, Easy Virtue

ONEXONE Portrait Studio in the Diesel Lounge, Kate Beckinsale, Nothing But the Truth, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Emma Roberts, Lymelife, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Mark Ruffalo, The Brothers Bloom, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Elizabeth Banks, Zack and Miri Make a Porno, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Willa Holland, Middle of Nowhere, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Chris 'Ludacris' Bridges, RocknRolla, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Matt Damon, The People Speak, 2008 Toronto Film Festival

ONEXONE Portrait Studio in the Diesel Lounge, Rachel Blanchard, Adoration, 2008 Toronto Film Festival