Celebrity Circuit

Actor Alan Alda visits the "Atlas" experimental area at the European Particle Physics laboratory (CERN) near Geneva, Switzerland, March 7, 2012.

NEXT: Alan Alda

Alan Alda, left, talks to physicist Steven Goldfarb, right, while he visits the "Atlas" experimental area at the European Particle Physics laboratory (CERN) in Meyrin, near Geneva, Switzerland, March 7, 2012.

NEXT: Katy Perry

Singer Katy Perry, second from left with blue hair, attends the Chanel fashion house presentation for women's Fall/Winter ready-to-wear 2013 fashion collection, during Paris fashion week, March 6, 2012. With her are, from left, French model Baptiste Giacobini, Italian actress Elisa Sednaoui, and British actress Kaya Scodelario.

NEXT: Paul McCartney

British musician Paul McCartney, left, and his wife, Nancy Shevell, attend the Stella McCartney fashion house presentation for women's Fall/Winter ready-to-wear 2013 fashion collection, during Paris fashion week, March 5, 2012. The designer is his daughter.

NEXT: Salma Hayek

Actress Salma Hayek, right, and her husband, Francois-Henri Pinault, attend the Stella McCartney fashion house presentation for women's Fall/Winter ready-to-wear 2013 fashion collection, during Paris fashion week, March 5, 2012.

NEXT: Sarah Jessica Parker

Actress Sarah Jessica Parker leaves the Louis Vuitton fashion house presentation for women's Fall/Winter ready-to-wear 2013 fashion collection, during Paris fashion week, March 7, 2012.

NEXT: Jessica Chastain

Hollywood actress Jessica Chastain walks on the sets of Oscar winning director Kathryn Bigelow's upcoming film about Osama bin Laden in Chandigarh, India, March 7, 2012. Bigelow and cast are in India shooting at various locations over the next few weeks, local media reports.

NEXT: Mariah Carey

Singer Mariah Carey performs at Caesars Entertainment "Escape to Total Rewards" kick-off at Gotham Hall on March 1, 2012, in New York.

NEXT: Katrina Bowden

Actress Katrina Bowden attends Caesars Entertainment "Escape to Total Rewards" kick-off at Gotham Hall on March 1, 2012, in New York

NEXT: Katharine McPhee

Actress Katharine McPhee attends Caesars Entertainment "Escape to Total Rewards" kick-off at Gotham Hall on March 1, 2012, in New York.

NEXT: Cee Lo Green

Singer Cee Lo Green acknowledges fans as he arrives with the Jubilee! showgirls at the Caesars Entertainment "Escape To Total Rewards" concert in Los Angeles, March 1, 2012. Simultaneous concert events were held in New York, Chicago, New Orleans and Los Angeles.

NEXT: Willem Dafoe

Actor Willem Dafoe arrives for the U.K. premiere of "John Carter" at a central London venue on March 1, 2012.

NEXT: Samantha Morton

British actress Samantha Morton arrives for the U.K. premiere of "John Carter" at a central London venue on March 1, 2012.

NEXT: Lynn Collins

Actress Lynn Collins arrives for the U.K. premiere of "John Carter" at a central London venue on March 1, 2012.

NEXT: Dominic West

British actor Dominic West arrives for the U.K. premiere of "John Carter" at a central London venue on March 1, 2012.

NEXT: Viggo Mortensen

Oscar-nominated actor Viggo Mortensen faces reporters during a news conference at the Coolidge Corner Theatre, in Brookline, Mass., March 5, 2012. Mortensen, perhaps best known for his role as Aragorn in the "The Lord of the Rings" trilogy of movies, was scheduled to receive the Coolidge Award at the independent movie theater.

NEXT: Jonah Hill

Actor and honoree Jonah Hill attends Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March 5, 2012, in New York.

NEXT: Dakota Fanning

Actress and honoree Dakota Fanning, left, poses with Cosmopolitan Editor-in-Chief Kate White at Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March 5, 2012, in New York.

NEXT: Freida Pinto

Actress and honoree Freida Pinto attends Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" event at the Mandarin Oriental on March. 5, 2012, in New York.

NEXT: Liam Hemsworth and mom

Honoree and actor Liam Hemsworth and his mother, Leonie, attend Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March 5, 2012, in New York.

NEXT: Robin Thicke

Singer Robin Thicke attends Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March. 5, 2012, in New York.

NEXT: Blake Shelton and Miranda Lambert

Country music artist and honoree singer Blake Shelton, left, and his wife, singer Miranda Lambert, attend Cosmopolitan Magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March 5, 2012, in New York.

NEXT: Paul Rudd

Actor and honoree Paul Rudd attends Cosmopolitan magazine's "Fun Fearless Males and Females of 2012" awards at the Mandarin Oriental on March 5, 2012, in New York.

NEXT: Goldie Hawn

Actress Goldie Hawn arrives to sign copies of her new book, "10 Mindful Minutes," at a book store in Picadilly, London, March 7, 2012, written in collaboration with acclaimed British poet Wendy Holden.

NEXT: Garth Brooks

Garth Brooks, left, and Connie Smith, second from right, listen during the announcement on March 6, 2012, that Brooks and Smith will be inducted into the Country Music Hall of Fame in Nashville, Tenn. Brooks, Smith, and Hargus "Pig" Robbins will become the newest members. With Brooks is his wife, singer Trisha Yearwood, and with Smith is her husband, singer Marty Stuart.

NEXT: Roger Waters

Bassist and singer Roger Waters, formerly of the English rock band Pink Floyd, acknowledges reporters before a meeting with Chile's President Sebastian Pinera at La Moneda government palace in Santiago, Chile, March 1, 2012. Currently on a South American tour, Rogers is reported as saying that, "Las Malvinas belong to Argentina," during an interview with Chilean TV anchor and reporter, Amaro Gomez-Pablos. The comment, which Gomez-Pablos tweeted, comes at a moment of tension as Argentina and Great Britain prepare to mark the 30th anniversary of the war they fought over the Malvinas or Falkland Islands.

NEXT: Aziz Ansari

In this March 3, 2012, photo provided by South Beach Comedy Festival Presented by Joe Boxer, actor/comedian Aziz Ansari performs at The Fillmore Miami Beach.

NEXT: Sean Bean

British actor Sean Bean arrives for a special U.K. screening of "Cleanskin," at the Mayfair Hotel in central London, March 5, 2012.

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