The Spring Breakers star revealed that the style was for a new movie role and she had changed her looks to fit the character of the film.
'New hair for a new movie :) I love changing my hair!' she wrote on her Facebook wall.
Her altered appearance is most likely for her role in the 2013 film, The Getaway.
The teenager will be playing the character of the 'Kid' opposite Ethan Hawke, Jon Voight and Bruce Payne.The film started shooting in May 2012 in Sofia, Bulgaria and has now continued shooting in the United States.
It's been a busy couple of weeks for the singer and actress.
The most significant event was her jump out of teenagehood after she celebrated her 20th birthday with a win at the Teen Choice Awards earlier this month.
'Beyond blessed, so much love. Thank you for the most incredible birthday yet! I'm truly, truly grateful. I love my family, friends and all of you,' she posted on her Facebook page shortly after.
