PICTURES: Natalie Portman Goes Back to Brunette Hair on Thor Sequel Set
Natalie Portman's not-so-incognito anymore.
The Oscar-winning actress, 31, resurfaced in London to begin shooting Thor: The Dark World -- and, appropriately enough, Portman has gone back to her dark roots!
To reprise her role as Jane Foster, the earth-dwelling romantic interest of hammer-swinging Norseman Thor (Chris Hemsworth), the star returned to the natural brunette hair that made her famous in movies like Star Wars Episode One: The Phantom Menace and Black Swan.
But the Israeli-born stunner underwent a startling hair makeover back in September, going bombshell blonde for her sexy role opposite Michael Fassbender in an untitled Terence Malick film, which wrapped up shooting in Austin, Tex. last month.
"Natalie makes a beautiful blonde!" her colorist, Tracey Cunningham told Us Weekly. "She needed to make the change for an upcoming movie role, and using Redken's Blonde Dimensions we achieved a gorgeous, multi-dimensional golden blonde."
It's been an eventful year for Portman, who wed star dancer-choreographer Benjamin Millepied, father to her son Aleph, 17, in Big Sur, Calif. in August.
"She has this glow about her these days," a pal recently observed. "There's been a change in her since the little man arrived. She and Benjamin are so content."
This article originally appeared on Usmagazine.com: PICTURES: Natalie Portman Goes Back to Brunette Hair on Thor Sequel Set
- Celebs Without Makeup
- Brad Pitt's Changing Looks
- Hollywood's Hottest Dads
- Mark Wahlberg's Shirtless Looks
- Prince William & Duchess Kate's Cutest Couple Moments
- Stars with tattoos of other celebs
- Brooke Shields' Changing Looks
- Carrie Underwood's Evolving Looks
- 'Fast & Furious 6' Cast Yearbook Photos
- Worst Celeb Sunburns
- Celeb Twins
- Celebs Who Work Out on the Beach
- Country Music's Hottest Couples
- Worst spring wardrobes
- Leonardo DiCaprio's Romance Retro
- WATN: 'Boy Meets World'
- Tim McGraw's changing looks
- Craziest Kim Kardashian pregnancy rumors
- Celebs Who Look Like Their Pets
- Mariah & Nick's Matching Style
- Hollywood's Tomboys
- The Royal Couple's Favorite Sports
- Kim Kardashian's Curvy Maternity Style
- WATN: 'Jurassic Park'
- January Jones' Retro Looks
- The Rock's Soft Side
- WATN: 'Veronica Mars'
- WATN: 'Beetlejuice'
- Fergie's Changing Looks
- Star Twitter Quitters
- Hollywood's Hottest Ryans
- Insured Celebrity Body Parts
- Most Expensive Celeb Engagement Rings
- Sweetest Celeb PDA
- Kim Kardashian's Tightest Looks
- Olivia Wilde's Best Street Style
- Justin Timberlake's Many Looks
- Hottest Royal Beach Bodies
- Celebrity Pets with Famous Names
- Michelle Williams' Best Fashion Moments
- Lindsay Lohan's Changing Looks
- Justin Bieber's Changing Hair
- Most Awkward People on the Red Carpet
- WATN: '7th Heaven'
- Ke$ha's Worst Looks
- Worst Oscar Fashion
- George Clooney's Oscar Dates
- Most Embarrassing Celeb Splits
- Stars Before They Were Oscar Nominees
- Jennifer Lawrence's Best Fashion Moments
- Rihanna's Sexiest Grammy Style
- Drew Barrymore's Craziest Looks
- Jennifer Aniston's Changing Looks
- Worst Dressed Celeb Designers
- Anne Hathaway's Oscar Looks
- Grammy's Hottest Couples
- Taylor Swift's Best Grammy Fashion
- WATN: 'Wonder Years'
- Destiny's Child's Most Iconic Looks
- Best Off-Season Bikini Bods
- Emma Stone's Best Red-Carpet Looks
- Celeb Flashers
- Mariah Carey's Biggest Feuds
- Mariah Carey's Wacky Wardrobe
- Britney Spears' Wackiest Red Carpet Poses
- Celeb Makeup Mistakes
- Ryan Gosling's Leading Ladies
- Nicole Kidman's Golden Globe Fashion
- Katy Perry's Year as a Single Gal
- Celebs Who've Removed Romantic Tattoos
- Most Memorable Celeb Holiday Cards
- Five of the Worst Celeb Winter Wardrobes
- Jennifer Aniston & Justin Theroux's Romance Retro
- Stars Who Are Aging in Reverse
- Christina Aguilera's Worst Looks
- 2012's One Hit Wonders
- Celebs Without Makeup
- Best and Worst Beach Bodies of 2012
- 2012 Fashion Don'ts
- Craziest Beauty Trends of 2012
- Celebs Who Survived Cheating Scandals
- The Turkeys of 2012
- Kristen Stewart's Best Red Carpet Moments
- WATN: 'Less Than Zero'
- Star Couples Who Went from Friends to Lovers
- The Most Famous Celebrity Pets
- The Hottest Celebrity Halloween Costumes
- WATN: 'I Know What You Did Last Summer'
- Jessica Biel's White Hot Red Carpet Style
Demi Lovato drops some major newborn scoop about Selena Gomez's family on today's Celebs Gone Social.Watch Video »
Check out some of Kim Kardashian's tightest outfits.Watch Video »
Best Bikini Bods
From Jennifer Lawrence to Rihanna, see the best off-season celeb bikini bods.Watch Video »
Two months after major marital problems, Ozzy and Sharon do a Hollywood date night on Celebs gone Social.Watch Video »
See how this country cutie has changed her looks over the years.Watch Video »
See how this former Calvin Klein model's looks have changed over the years.Watch Video »
From Videos of Wonderwall
From Crowd Ignite