<b>PHOTOS:</b> Can celebrities be too thin?

Nicole Richie looks healthy and beautiful as she presents her fashion collection “Winter Kate” at Galeries Lafayette on Feb. 24, 2010, in Paris.   (Francois Durand/Getty Images)

Mackenzie Phillips, right, was thin during her days on “One Day at a Time,” although she filled out some later in life. Here, she’s shown with actresses Valerie Bertinelli, left, and Bonnie Franklin, who were her co-stars on the TV series, at CBS’ 75th anniversary celebration on Nov. 2, 2003, in New York.   (Louis Lanzano/AP)

Claudia Schiffer looks thin as she leaves the Dior ’09 Spring Summer Haute Couture fashion show on June 30, 2008, in Paris.   (Francois Durand/Getty Images)

Actress Reese Witherspoon looks well and prosperous as she arrives at the premiere of Dreamworks’ “Monsters Vs. Aliens” held at the Gibson Amphitheatre on March 22, 2009, in Universal City, Calif.  (Jason Merritt/Getty Images)

Actress Reese Witherspoon‘s face appears slimmer at The Livestrong Foundation’s “Art Mere Art Pere Night” at Smashbox Studios on Sept. 23, 2010, in Hollywood, Calif.   (Michael Buckner/Getty Images)

Actress Angelina Jolie arrives for the Russian premiere of her feature film ‘Salt’ in Moscow on July 25, 2010.   (Artem Korotayev/AFP/Getty Images)

Actress Calista Flockhart attends the ninth annual Operation Smile gala at the Beverly Hilton Hotel on Sept. 24, 2010, in Beverly Hills, Calif. She has dealt with weight questions from the media since her days as the star on “Ally McBeal.”  (Frederick M. Brown/Getty Images)

Actress Kate Bosworth looks much slimmer as she signs the wall at the Rock the Earth event to support the fight against global warming, at the Day After Club in Los Angeles on Feb. 24, 2005.   (Chris Polk/AP)

Victoria’s Secret model Alessandra Ambrosio looks healthy and sexy during the 2009 Victoria’s Secret Fashion Show at the Lexington Armory in New York on Nov. 19, 2009.   (Timothy A. Clary/Getty Images)

Supermodel Alessandra Ambrosio’s slim frame stands apart from the fuller ones of her fellow beauties. Here, Miranda Kerr, from left, Candice Swanepoel and Ambrosio celebrate the 15th Anniversary of the Victoria’s Secret Swim Catalogue at the SLS hotel on March 25, 2010, in Los Angeles.  (Toby Canham/Getty Images)

Tori Spelling looks tiny next to husband Dean McDermott on April 26, 2010, during the NBC Universal 2010 Summer Press Day in Pasadena, Calif.   (Chris Pizzello/AP file)

Amy Winehouse performs at the Virgin Festival in Baltimore in this Aug. 4, 2007, file photo.   (Jeff Christensen/AP file)

U.S. actress Lara Flynn Boyle at the 60th Annual Golden Globe Awards on Jan. 19, 2003, in Beverly Hills, Calif. Boyle’s weight factored in her demise on the series “Vegas,” where her character was blown off a balcony by the wind.   (Lucy Nicholson/AFP)

Actress Zoe Saldana looks a little fuller at the Hollywood Live Magazine’s Seventh annual Breakthrough of the Year Awards on Dec. 9, 2007, in the Hollywood, Calif.   (Gus Ruelas/AP)

Actress Actress Zoe Saldana looks perhaps a little too lean at the World of Calvin Klein event during the Mercedes Benz Fashion Week Spring/Summer 2011 on July 7, 2010 in Berlin, Germany.  (Andreas Rentz/Getty Images)