Lifestyle Holidays & Occasions Most Dramatic Celebrity Hair Transformations By InStyle Editors InStyle Editors Facebook Instagram Twitter Our editors and writers comprise decades of expertise across the beauty, fashion, lifestyle and wellness spaces in print and digital. We prioritize journalistic integrity, factual accuracy, and also having fun with every story we share. InStyle's editorial guidelines Updated on December 23, 2009 @ 06:16PM Pin Share Tweet Email Trending Videos Photo: Seth Browarnik/Startraks, Nick Laham/Getty Images Most Dramatic Celebrity Hair Transformations 01 of 10 Halle Berry Steve Granitz/WireImage, Jeffrey Mayer/WireImage, Jean Baptiste Lacroix/WireImage Halle Berry attends the March of Dimes 4th Annual Celebration of Babies at Four Seasons Hotel on November 7, 2009 in Beverly Hills, California.March of Dimes 4th Annual Celebration of Babies - Los Angeles, CAFour Seasons HotelBeverly Hills, CA United StatesNovember 7, 2009Actress/Host Halle Berry poses in the press room for the 40th NAACP Image Awards at the Shrine Auditorium on February 12, 2009 in Los Angeles, California.40th NAACP Image Awards - Press RoomShrine AuditoriumLos Angeles, CA United StatesFebruary 12, 2009Halle Berry arrives at the 2009 Jenesse Silver Rose Gala & Auction at the Beverly Hills Hotel on April 19, 2009 in Beverly Hills, California.2009 Jenesse Silver Rose Gala And AuctionBeverly Hills HotelBeverly Hills, CA United StatesApril 19, 2009 02 of 10 Fergie Jean-Paul Aussenard/WireImage, Donato Sardella/WireImage Singer Fergie arrives at the 5th annual Black Eyed Peas Peapod Foundation benefit concert held at the Conga Room on February 5, 2009 in Los Angeles, California.5th Annual Black Eyed Peas Peapod Foundation Benefit Concert - ArrivalsThe Conga RoomLos Angeles, California United StatesFebruary 5, 2009Musician Fergie promotes her new shoe collection at Nordstrom At The Grove on March 21, 2009 in Los Angeles, California.Fergie Promotes Shoe Collection At Nordstrom At The GroveLos Angeles, CA United StatesMarch 21, 2009 03 of 10 Ali Larter Stefanie Keenan/WireImage, Jean Baptiste Lacroix/WireImage Actress Ali Larter attends The Byron & Tracey Lounge held at Byron & Tracey Salon on May 29, 2009 in Beverly Hills, California.The Byron & Tracey Lounge - Day 2Byron & Tracey SalonBeverly Hills, California United StatesMay 29, 2009Ali Larter arrives for the Cirque Du Soleil Opening Night Gala For Kooza at Santa Monica Pier on October 16, 2009 in Santa Monica, California.Cirque du Soleil's "Kooza" - Opening Night GalaSanta Monica PierSanta Monica, CA United StatesOctober 16, 2009 04 of 10 Ashlee Simpson-Wentz Bruce Gifford/FilmMagic, Mike Flokis/WireImage LAS VEGAS - DECEMBER 31: Singer Ashlee Simpson Wentz arrives at "PUREfection" New Years Eve Party, an evening at PURE Nightclub inside Caesars Palace Hotel and Casino, on December 31, 2008 in Las Vegas, Nevada. (Photo by ) *** Local Caption *** Ashlee Simpson WentzAshlee Simpson poses at the Vodafone MTV Australia Awards 2009 at the Sydney Convention and Exhibition Centre, Darling Harbour on March 27, 2009 in Sydney, Australia.Awards Room At The MTV Australia Awards 2009Sydney, AustraliaMarch 27, 2009 05 of 10 Victoria Beckham Mark Sullivan/WireImage, Noel Vasquez/Getty Images Victoria Beckham arrives at the 17th Annual Elton John AIDS Foundation's Academy Award Viewing Party held at the Pacific Design Center on February 22, 2009 in Hollywood, California.17th Annual Elton John AIDS Foundation's Academy Award Viewing Party - ArrivalsPacific Design CenterHollywood, CA United StatesFebruary 22, 2009LOS ANGELES, CA - OCTOBER 30: Victoria Beckham attends the Los Angeles Lakers v Dallas Mavericks game on October 30, 2009 in Los Angeles, California. 06 of 10 Ginnifer Goodwin Jeffrey Mayer/WireImage, Jordan Strauss/WireImage Actress Ginnifer Goodwin arrives at the Los Angeles Premiere of the "He's Just Not That Into You" at Grauman's Chinese Theatre on February 2, 2009 in Los Angeles, California."He's Just Not That Into You" Los Angeles Premiere - ArrivalsGrauman's Chinese TheatreLos Angeles, CA United StatesFebruary 2, 2009Ginnifer Goodwin attends the "Robot Chicken" Roller Skating Tour L.A. event at Skateland on August 1, 2009 in Northridge, California. 18722_379.JPGRobot Chicken Roller Skating Tour L.A. EventSkatelandNorthridge, CA United StatesAugust 1, 2009 07 of 10 Ashley Greene Jeffrey Mayer/WireImage, Chris Polk/FilmMagic Actress Ashley Greene arrives at the Los Angeles Premiere of "Push" at the Mann Village Theater on January 29, 2009 in Westwood, California."Push" Los Angeles Premiere - ArrivalsMann Village TheaterWestwood, CA United StatesJanuary 29, 2009 HOLLYWOOD - JUNE 02: Ashley Greene at the opening of Ryan Cabrera's Moulin Rouge-style hotspot Madame Royale in Hollywood, CA on June 2, 2009. (Photo by 08 of 10 Jada Pinkett Smith George Pimentel/WireImage, Jeffrey Ufberg/WireImage Actress Jada Pinkett Smith arrives at the 2009 Vanity Fair Oscar Party Hosted By Graydon Carter at the Sunset Tower on February 22, 2009 in West Hollywood, California.2009 Vanity Fair Oscar Party Hosted By Graydon Carter - ArrivalsSunset TowerWest Hollywood, CA United StatesFebruary 22, 2009Actress Jada Pinkett-Smith visits "Late Show with David Letterman" at the Ed Sullivan Theater on June 15, 2009 in New York City.Jack Black, Michael Cera, Jada Pinkett Smith And Will Smith Visit "Late Show With David Letterman" - June 15, 2009Ed Sullivan TheaterNew York, NY United StatesJune 15, 2009 09 of 10 Kristen Stewart George Pimentel/WireImage, Michael Tran/FilmMagic Actress Kristen Stewart attends the premiere of "Adventureland" during the 2009 Sundance Film Festival at Eccles Theatre on January 19, 2009 in Park City, Utah.2009 Sundance Film Festival - "Adventureland" PremiereEccles TheatrePark City, UT United StatesJanuary 19, 2009SAN DIEGO - JULY 23: Actress Kristen Stewart attends the 2009 Comic-Con "Twilight: New Moon" press conference held at the Hilton San Diego Bayfront Hotel on July 23, 2009 in San Diego, California. 10 of 10 Kate Hudson Seth Browarnik/Startraks, Nick Laham/Getty Images Miami Beach, FLA - 06/19/2009 - Kate Hudson at Blade at Fontainebleau -PICTURED: Kate Hudson -NEW YORK - OCTOBER 07: Actress Kate Hudson looks on from the stands before Game One of the ALDS between the Minnesota Twins and the New York Yankees during the 2009 MLB Playoffs at Yankee Stadium on October 7, 2009 in the Bronx borough of New York City.