Christina Aguilera

MUNICH, GERMANY - JULY 13: Singer Christina Aguilera presents the new fragrance 'Royal Desire' at the Upside East Lounge on July 13, 2011 in Munich, Germany. (Photo by Hannes Magerstaedt/Getty Images)

Natalie Portman

WESTWOOD, CA - JANUARY 11: Actress Natalie Portman arrives at Paramount Pictures' 'No Strings Attached' premiere at Regency Village Theater on January 11, 2011 in Westwood, California. (Photo by Frazer Harrison/Getty Images)

Megan Fox

BEVERLY HILLS, CA - JANUARY 16: Actress Megan Fox arrives at the 68th Annual Golden Globe Awards held at The Beverly Hilton hotel on January 16, 2011 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)

Mila Kunis

HOLLYWOOD, CA - FEBRUARY 27: Actress Mila Kunis attends the Governors Ball on February 27, 2011 in Hollywood, California. (Photo by Kevork Djansezian/Getty Images)

Serinda Swan

Actress Serinda Swan arrives at the Premiere of "Tron : Legacy" at El Capitan Theater in Hollywood, California, on December 11, 2010. AFP PHOTO / VALERIE MACON (Photo credit should read VALERIE MACON/AFP/Getty Images)

Emma Watson

Emma Watson arrives for the North American premiere of ?Harry Potter and the Deathly Hallows ? Part 2? July 11, 2011 at Lincoln Center in New York. AFP PHOTO/Stan HONDA (Photo credit should read STAN HONDA/AFP/Getty Images)

Eva Mendes

NEW YORK, NY - JUNE 23: Eva Mendes reveals her new campaign for Angel by Thierry Mugler at IAC Building on June 23, 2011 in New York City. (Photo by Andrew H. Walker/Getty Images for Thierry Mugler)

Danica McKellar

LOS ANGELES, CA - APRIL 30: Actress Danica McKellar attends the 16th Annual Los Angeles Times Festival of Books - Day 1 at USC on April 30, 2011 in Los Angeles, California. (Photo by David Livingston/Getty Images)

Gabrielle Union

WEST HOLLYWOOD, CA - FEBRUARY 27: Actress Gabrielle Union arrives at the Vanity Fair Oscar party hosted by Graydon Carter held at Sunset Tower on February 27, 2011 in West Hollywood, California. (Photo by Pascal Le Segretain/Getty Images)

Alyssa Milano

LOS ANGELES, CA - DECEMBER 12: Actress Alyssa Milano arrives at Spike TV's 7th Annual Video Game Awards at the Nokia Event Deck at LA Live on December 12, 2009 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

Marisa Miller

LOS ANGELES, CA - JULY 14: Model Marisa Miller poses in press room during the 2010 ESPY Awards at Nokia Theatre L.A. Live on July 14, 2010 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

Erin Andrews

DALLAS, TX - FEBRUARY 05: TV Personality Erin Andrews poses with Motorola Xoom at the Maxim Party Powered by Motorola Xoom at Centennial Hall at Fair Park on February 5, 2011 in Dallas, Texas. (Photo by Gary Miller/Getty Images for Motorola Xoom)

Lacey Chabert

HOLLYWOOD - APRIL 27: Actress Lacey Chabert arrives at the premiere of Warner Bros. "Ghosts Of Girlfriends Past" held at Grauman's Chinese Theatre on April 27, 2009 in Hollywood, California. (Photo by Kevin Winter/Getty Images)

Emma Rossum

NEW YORK - SEPTEMBER 14: Emma Rossum attends Carolina Herrera Spring 2010 fashion show at Bryant Park on September 14, 2009 in New York, New York. (Photo by Bryan Bedder/Getty Images for IMG)

Erica Durance

LOS ANGELES, CA - SEPTEMBER 21: Actress Erica Durance attends TV Guide's Sixth Annual Emmy Awards After Party at The Kress on September 21, 2008 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

Sarah Michelle Gellar

NEW YORK - NOVEMBER 10: Actress Sarah Michelle Gellar attends the 2008 Glamour Women of the Year Awards at Carnegie Hall on November 10, 2008 in New York City. (Photo by Stephen Lovekin/Getty Images)

Roselyn Sanchez

BEVERLY HILLS, CA - FEBRUARY 22: Actress Roselyn Sanchez attends the 11th Annual Impact Awards Gala at the Beverly Wilshire Hotel on Febuary 22, 2008 in Beverly Hills, California. (Photo by Valerie Macon/Getty Images)

Taylor Swift

NASHVILLE, TN - NOVEMBER 09: Taylor Swift attends the 45th annual CMA Awards at the Bridgestone Arena on November 9, 2011 in Nashville, Tennessee. (Photo by Michael Loccisano/Getty Images)

Rosie Huntington-Whiteley

BEVERLY HILLS , CA - OCTOBER 26: Model Rosie Huntington-Whiteley arrives at the Burberry Body Event hosted by Christopher Bailey and Rosie Huntington-Whiteley held at Burberry Beverly Hills on October 26, 2011 in Beverly Hills, California. (Photo by Michael Buckner/Getty Images for Burberry)

Anne Hathaway

BEVERLY HILLS, CA - OCTOBER 24: Actress Anne Hathaway poses backstage during the 15th Annual Hollywood Film Awards Gala Presented By Starz held at The Beverly Hilton Hotel on October 24, 2011 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images for Hollywood Film Awards)

Sofia Vergara

LONDON, ENGLAND - NOVEMBER 17: Sofia Vergara attends the European premiere of 'Happy Feet Two' at the Empire cinema Leicester Square on November 20, 2011 in London, England. (Photo by Ian Gavan/Getty Images)

Lindsay Lohan

LOS ANGELES, CA - OCTOBER 12: Actress Lindsay Lohan attends the Premiere Of THQ's "Saints Row: The Third" on October 12, 2011 in Los Angeles, California. (Photo by Valerie Macon/Getty Images)

Sophie Monk

London-born Australian actress and singer Sophie Monk arrives at the premiere of DreamWorks Pictures? "Real Steel" October 2, 2011 in at the Gibson Amphitheatre in Universal City, California. AFP PHOTO / ROBYN BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)

Fergie

NEW YORK, NY - SEPTEMBER 30: Fergie of the Black Eyed Peas performs onstage during CHASE Presents The Black Eyed Peas and Friends "Concert 4 NYC" benefiting the Robin Hood Foundation at Central Park, Great Lawn on September 30, 2011 in New York City. (Photo by Dimitrios Kambouris/Getty Images)

Emmanuelle Chriqui

BURBANK, CA - OCTOBER 15: Actress Emmanuelle Chriqui attends the 2011 Environmental Media Awards at Warner Bros. Studios on October 15, 2011 in Burbank, California. (Photo by Frederick M. Brown/Getty Images)

Kaley Cuoco

LOS ANGELES, CA - SEPTEMBER 18: Actress Kaley Cuoco arrives at the 63rd Annual Primetime Emmy Awards held at Nokia Theatre L.A. LIVE on September 18, 2011 in Los Angeles, California. (Photo by Frazer Harrison/Getty Images)

Scarlett Johansson

MILAN, ITALY - SEPTEMBER 25: Actress Scarlett Johansson attends the Dolce & Gabbana Spring/Summer 2012 fashion show as part Milan Womenswear Fashion Week on September 25, 2011 in Milan, Italy. (Photo by Vittorio Zunino Celotto/Getty Images)

Grace Park

WAIKIKI, HI - SEPTEMBER 10: Grace Park at the Hawaii 5-0 premiere on September 10, 2011 in Waikiki, Hawaii. (Photo by Kent Nishimura/Getty Images)

Jessica Alba

SANTA MONICA, CA - SEPTEMBER 10: Actress Jessica Alba arrives at the 2011 NCLR ALMA Awards held at Santa Monica Civic Auditorium on September 10, 2011 in Santa Monica, California. (Photo by Kevin Winter/Getty Images for NCLR)

Hilary Duff

WEST HOLLYWOOD, CA - AUGUST 10: Actress Hilary Duff attends the Kendra Scott Jewelry of Beverly Hills Grand Opening benefiting "Blessings In A Backpack" on August 10, 2011 in West Hollywood, California. (Photo by Valerie Macon/Getty Images)