Evangeline Lilly arrives at the "The Hobbit: An Unexpected Journey" world premiere at Taranaki Streeet entrance on November 28, 2012 in Wellington, New Zealand. Credit: Mark Tantrum/WireImage.com

Evangeline Lilly, is that you?

Hitting the red carpet for the world premiere of The Hobbit: An Unexpected Journey in Wellington, New Zealand, the actress, 33, re-emerged for her first event in a long time -- looking very little like her former self.

The star, best known as Kate on the beloved ABC series Lost, chopped off her trademark brown wavy hair to reveal a startling short, shaggy new 'do with blonde streaks; Lilly wore a sexy pink sequined mini-dress with long sleeves for the premiere.

Lilly plays Mauriel, an elf character, in installments two and three of Peter Jackson's much-anticipated prequel trilogy to the Lord of the Rings films, based on J.R.R. Tolkien's book.

She's stayed mostly out of the limelight since Lost aired its finale in 2010. During that hiatus, she became a mom -- welcoming a son with boyfriend Norman Kali in mid-2010.

"My son is wonderful. He is amazing!" she told Us in October 2011. "Motherhood is a joy! I have dreamed about being a mother since I was 12 years old and there's nothing disappointing about it."

Tell Us: What do you think of Lilly's hair makeover?