Representatives for the CW network and producer Warner Bros. declined to comment, but sources confirmed that the peroxide blonde was leaving for good. Momsen, also a singer with rock band 'Pretty Reckless", attracted criticism from 'Project Runway"s" Tim Gunn, who played mentor to Momsen"s character in an episode last month.
Gunn told E! News, “What a diva. She was pathetic, she couldn't remember her lines and she didn't even have that many. I thought to myself, ''Why are we being held hostage by this brat?" the New York post quoted Gunn as telling E! News.
Momsen, a star since the age of seven after appearing in 'How the Grinch Stole Christmas", has recently attracted attention for her verbal attacks on fellow stars including Miley Cyrus and Rihanna.