NIKKI Reed has admitted the 'Twilight Saga' cast don't all get along.

The 23-year-old actress - who plays Rosalie Hale in the vampire movie franchise - admits the dynamic between the actors has changed from when they started out on the first movie, 'Twilight', in 2008 to recent filming on 'The Twilight Saga: Breaking Dawn Parts I and II' and she doesn't plan to stay in touch with everyone.

She said: "In the beginning, it was innocent and fun, and we were like one big happy family - it was like being at sleepaway camp. And then success comes along and changes the dynamic. We're not all best friends, and we're not all going to hang out together after the final movie is done."

Nikki - who stars in the 'Twilight Saga' series alongside actors including Kristen Stewart, Robert Pattinson, Kellan Lutz and Taylor Lautner - shot to fame in 2003 when she wrote and starred in 'Thirteen' and the brunette beauty found the movie gave people incorrect ideas about her personality and work ethic.

She explained to the new issue of Seventeen magazine: "I got typecast as a party girl when 'Thirteen' first came out. The funny thing was, I was a virgin, I didn't do drugs, and I barely drank."

Twilight Saga: Breaking Dawn Part I debuts in Australian on Wednesday.

Watch the stars on the red carpet here