Natalie Portman Goes Bright Blonde (PHOTO)

Natalie Portman recently ditched her brunette locks for a new blond hairdo. She showed off the results on Saturday night while on the red carpet at Walt Disney Concert Hall for the opening night performance of L.A. Dance Project.

The 31-year-old stunned onlookers with the drastic new do and appeared to be in good spirits as she posed in a white Dior Couture gown and Van Cleef & Arpels jewels. At one point the actress was seen posing for photos with actor Robert Pattinson, 26.

"They were very friendly," an eyewitness reportedly told Us Weekly magazine of Portman and Pattinson's interactions. "They were laughing aloud and smiling. Rob … was having a great time."

Although Portman appeared to confidently embrace her new hairstyle, it may only last for a short term as the "Black Swan" actress was reportedly overheard telling fans that she lightened her hair for a new movie role, according to Us Magazine.

"My mom says I'm like a different person," Portman reportedly told The Hollywood Reporter, revealing that Los Angeles-based colorist Tracey Cunningham did her hair. "I did it just a couple of days ago."

Fans flocked to social networking site Twitter, where an overwhelming majority praised Portman's new look.

"I adore Natalie Portman's new blonde hair! That being said she even looked great when her head was shaven, so she can pull off anything!" Chloé Slevin tweeted.

"Natalie Portman's hair looks stunning!! The blonde really brings out her eyes and makes her look fresh faced," Lauren tweeted.

"Gorgeous!! The blonde hair looks amazing on Natalie Portman, I hope she keeps it!!" Dane Rooney tweeted.

Portman recently wed her boyfriend of three years Benjamin Millepied in a traditional Jewish wedding ceremony. The pair, who wed in August in Big Sur, California, share a 1-year-old son, Aleph Portman-Millepied.

To see a photo of Natalie Portman's blonde hair click here: