Katherine Heigl Blonde

Blonde or Brunette?

Actress Katherine Heigl arrives at the 80th Annual Academy Awards held at the Kodak Theatre on February 24, 2008 in Hollywood, California. (Photo by Frederick M. Brown/Getty Images)

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Katherine Heigl ... Actress Katherine Heigl arrives at the 80th Annual Academy Awards held at the Kodak Theatre on February 24, 2008 in Hollywood, California. (Photo by Frederick M. Brown/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Katherine Heigl ... Actress Katherine Heigl arrives at the premiere of Columbia Pictures' 'The Ugly Truth' held at Pacifics Cinerama Dome on July 16, 2009 in Hollywood, California. (Photo by Kevin Winter/Getty Images)

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Scarlett Johanss... Actress Scarlett Johansson attends the 'He's Just Not That Into You' film premiere at Grauman's Chinese Theatre on February 2, 2009 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

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Cameron Diaz Blo... Actress Cameron Diaz arrives at the 66th Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 11, 2009 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)

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Cameron Diaz Bru... Actress Cameron Diaz arrives at the 2007 Vanity Fair Oscar Party at Mortons on February 25, 2007 in West Hollywood, California. (Photo by Evan Agostini/Getty Images)

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Reese Witherspoo... Actress Reese Witherspoon attends the premiere of Warner Bros' 'Four Christmases' at Grauman's Chinese Theatre on November 20, 2008 in Hollywood, California. (Photo by David Livingston/Getty Images)

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Reese Witherspoo... Actress Reese Witherspoon attends a special of the film 'Vanity Fair' August 16, 2004 in New York City. (Photo by Evan Agostini/Getty Images)

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Julia Roberts Bl... Actress Julia Roberts attends the premiere of the film 'Ocean's Eleven' December 5, 2001 in Los Angeles, CA. Roberts was ranked Number 4 by E! Online voters as one of the Top 20 Entertainers of 2001. The actress was also voted Celebrity With the Best Fashion Sense. (Photo by Vince Bucci/Getty Images)

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Julia Roberts Br... Actress Julia Roberts arrives to the Metropolitan Museum of Art Costume Institute Gala, Superheroes: Fashion and Fantasy, held at the Metropolitan Museum of Art on May 5, 2008 in New York City. (Photo by Andrew H. Walker/Getty Images)

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Drew Barrymore B... Actress Drew Barrymore arrives at the 66th Annual Golden Globe Awards held at the Beverly Hilton Hotel on January 11, 2009 in Beverly Hills, California. (Photo by Jason Merritt/Getty Images)

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Drew Barrymore B... Actress Drew Barrymore arrives at the 64th Annual Golden Globe Awards at the Beverly Hilton on January 15, 2007 in Beverly Hills, California. (Photo by Kevin Winter/Getty Images)

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Winona Ryder Blo... Winona Ryder in Edward Scissorhands. (Photo: 20th Century Fox)

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Winona Ryder Bru... Winona Ryder attends Marie Claire Prix de la Mode 2008 awards at French Embassy on November 20, 2008 in Madrid, Spain. (Photo by Carlos Alvarez/Getty Images)

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Keira Knightley ... Actress Keira Knightley arrives to the 63rd Annual Golden Globe Awards at the Beverly Hilton on January 16, 2006 in Beverly Hills, California. (Photo by Frazer Harrison/Getty Images)

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Keira Knightley ... Actress Keira Knightley attends the premiere for 'Cheri' as part of the 59th Berlin Film Festival at the Berlinale Palast on February 10, 2009 in Berlin, Germany. (Photo by Pascal Le Segretain/Getty Images)

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Jessica Alba Blo... Actress Jessica Alba arrives at the 7th Annual Young Hollywood Awards at the Music Box/Henry Fonda Theater on May 1, 2005 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)

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Jessica Alba Bru... Actress Jessica Alba arrives at the 24th Annual Film Independent's Spirit Awards held at Santa Monica Beach on February 21, 2009 in Santa Monica, California. (Photo by Jason Merritt/Getty Images)

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Rachel McAdams B... Actress Rachel McAdams arrives at the Scientific and Technical Awards Presented By AMPAS at the Beverly Hilton Hotel on February 18, 2006 in Los Angeles, California. (Photo by Michael Buckner/Getty Images)

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Rachel McAdams B... Actress Rachel McAdams attends 'The Lucky Ones' premiere during the 2008 Toronto International Film Festival held at the Roy Thomson Hall on September 10, 2008 in Toronto, Canada. (Photo by Malcolm Taylor/Getty Images)

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Gwyneth Paltrow ... Actress Gwyneth Paltrow attends the Bent On Learning Charity event at Stephen Weiss Studio on February 25, 2009 in New York City. (Photo by Stephen Lovekin/Getty Images)

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Gwyneth Paltrow ... Gwyneth Paltrow attends the 6th Annual Women in Hollywood Luncheon in Beverly Hills November 16, 1999.(Photo by Dan Callister/Online USA/Newsmakers)

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Ashlee Simpson B... Singer Ashlee Simpson arrives to the performance with Denise Richards and the Pussycat Dolls at Pure Nightclub inside Caesars Palace on June 9, 2006 in Las Vegas, Nevada. (Photo by Michael Buckner/Getty Images)

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Ashlee Simpson B... Musician Ashlee Simpson attends MTV's TRL at the MTV Time Square Studio on February 7, 2005 in New York City. (Photo by Mark Mainz/Getty Images)

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Jessica Simpson ... Jessica Simpson launches her new fragrance 'Fancy' at Macy's at the South Coast Plaza on December 13, 2008 in Costa Mesa, California. (Photo by Alberto E. Rodriguez/Getty Images)

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Jessica Simpson ... Jessica Simpson attends the Metropolitan Museum of Art Costume Institute Benefit Gala 'Poiret: King Of Fashion' at the Metropolitan Museum of Art on May 7, 2007 in New York City. (Photo by Evan Agostini/Getty Images)

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Sarah Jessica Pa... Sarah Jessica Parker arrives at the Valentino - Fall/Winter Haute Couture Fashion Show at the Santo Spirito in Sassia complex on July 7, 2007 in Rome, Italy. Fashion icon Valentino decided to mark the celebration of the 45th anniversary of his luxury brand by breaking a 17 year tradition of unveiling his luxurious haute couture collections for women in Paris with a show in Rome. Valentino showed about 64 couture dresses, a record number considering a HC show never shows more than 40 gowns. (Photo by Elisabetta Villa/Getty Images)

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Sarah Jessica Pa... Actress Sarah Jessica Parker arrives at the 81st Annual Academy Awards held at Kodak Theatre on February 22, 2009 in Los Angeles, California. (Photo by Jason Merritt/Getty Images)

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Mandy Moore Blon... Mandy Moore arriving at the 2001 MTV Video Music Awards held at the Metropolitan Opera House at Lincoln Center in New York City on September 6, 2001. (Photo by Dave Hogan/Getty Images)

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Mandy Moore Brun... Actress Mandy Moore attends the SU2C Merchandise Collection Launch party at the Kitson Studio on December 10, 2008 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

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Beyonce Knowles ... Singer Beyonce Knowles arrives for The Cipriani Wall Street Concert Series at Cipriani Wall Street on November 1, 2005 in New York City. (Photo by Brad Barket/Getty Images)

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Beyonce Knowles ... Singer/actress Beyonce Knowles appears onstage during MTV's Total Request Live at the MTV Times Square Studios on July 31, 2007 in New York City. (Photo by Scott Gries/Getty Images)

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Victoria Beckham... Victoria Beckham attends a press conference to announce the Spice Girls' forthcoming world tour at the O2 Arena, Greenwich on June 28, 2007 in London, England. (Photo by Dave Hogan/Getty Images)

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Victoria Beckham... Victoria Beckham arrives at the 17th Annual Elton John AIDS Foundation Oscar party held at the Pacific Design Center on February 22, 2009 in West Hollywood, California. (Photo by Larry Busacca/Getty Images for EJAF)

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Carmen Electra B... Actress Carmen Electra attends the welcome reception for 'A Salute To Our Troops' weekend hosted by Microsoft and the USO at the Hard Rock Cafe on November 7, 2008 in New York City. (Photo by Jason Kempin/Getty Images for Microsoft)

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Carmen Electra B... Actress Carmen Electra arrives at the 2007 ESPY Awards at the Kodak Theatre on July 11, 2007 in Hollywood, California. (Photo by Vince Bucci/Getty Images)

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Christina Aguile... Singer Christina Aguilera arrives at the Grammy Nominations concert live held at the Nokia Theatre LA Live on December 3, 2008 in Los Angeles, California. (Photo by Frederick M. Brown/Getty Images)

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Christina Aguile... Christina Aguilera departs from the Sanderson for her final appearance at Wembley Arena on November 5, 2003 in London. (Photo by Will Conran/Getty Images)

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Sarah Michelle G... Actress Sarah Michelle Gellar attends the opening party for Juicy Couture's 5th Avenue flagship store at the Juicy Couture boutique on November 6, 2008 in New York City, New York. (Photo by Andrew H. Walker/Getty Images for Juicy Couture)

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Sarah Michelle G... Actress Sarah Michelle Gellar attends an Alanis Morissette concert to benefit Step Up Women's Network at the Hiro Ballroom in the Maritime Hotel November 1, 2005 in New York City. (Photo by Paul Hawthorne/Getty Images)

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Madonna Blonde Singer Madonna arrives at the 2009 Vanity Fair Oscar Party hosted by Graydon Carter held at the Sunset Tower on February 22, 2009 in West Hollywood, California. (Photo by Michael Buckner/Getty Images)

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Madonna Brunette Singer Madonna and model Naomi Campbell. (Photo by Dave Hogan/Getty Images)

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Lindsay Lohan Bl... Actress Lindsay Lohan attends a screening of 'Filth and Wisdom' hosted by The Cinema Society and Dolce and Gabbana at the IFC Center on October 13, 2008 in New York City. (Photo by Stephen Lovekin/Getty Images)

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Lindsay Lohan Br... Actress Lindsay Lohan arrives at the GQ magazine 2006 Men of the Year dinner celebrating the 11th Annual Men of the Year issue at the Sunset Tower Hotel on November 29, 2006 in West Hollywood, California. (Photo by Kevin Winter/Getty Images for GQ)

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Geena Davis Blon... Geena Davis in The Long Kiss Goodnight. (Photo: New Line Cinema)

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Geena Davis Brun... Actress Geena Davis arrives at the 30th anniversary Carousel of Hope Ball to benefit the Barbara Davis center for childhood diabetes held at the Beverly Hilton Hotel on October 25, 2008 in Beverly Hills, California. (Photo by Stephen Shugerman/Getty Images)

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Nicole Richie Bl... Nicole Richie attends the Proenza Schouler Fall 2009 fashion show during Mercedes-Benz Fashion Week on February 18, 2009 in New York City. (Photo by Andrew H. Walker/Getty Images)

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Nicole Richie Br... TV personality Nicole Richie arrives at the Victoria's Secret Fashion Show held at the Kodak Theatre on November 16, 2006 in Hollywood, California. The show will be broadcast December 5, 2006 on CBS. (Photo by Frazer Harrison/Getty Images)

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Tyra Banks Blond... Model Tyra Banks poses in the press room after winning "Outstanding Talk Show/Informative" during the Daytime Emmy Awards on Friday, June 20, 2008 in Los Angeles. (AP Photo/Dan Steinberg)

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Tyra Banks Brune... Television Host/model Tyra Banks arrives at the Lionsgate Premiere Of 'Madeas Family Reunion' held at the Arclight Theatres on February 21, 2006 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

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Miley Cyrus Blon... Singer/actress Miley Cyrus of the show Hannah Montana sings inside at the Hollywood Radio & Television Society 'Kids Day 2006' at the Hollywood and Highland complex on August 2, 2006 in Hollywood, California. (Photo by Michael Buckner/Getty Images for HRTS)

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Miley Cyrus Brun... Actress Miley Cyrus arrives at the 80th Annual Academy Awards held at the Kodak Theatre on February 24, 2008 in Hollywood, California. (Photo by Frazer Harrison/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.