Singer/actress Keke Palmer has signed up to play Rozonda 'Chilli' Thomas in an upcoming biopic about TLC.

Palmer joins rapper Lil Mama, who will play Lisa 'Left Eye' Lopes, in the full-length Tv movie about how the R&B superstars became one of the most successful girl groups in history.

Nineteen-year-old Palmer admits it is a huge honour to be involved in the Tlc movie because she was a huge fan of the trio growing up.

She tells, "I would sing No Scrubs over and over again to the point my parents would have to tell me to stop, but I never did, I had my little hairbrush as my mic and nobody could tell me I wasn't the fourth member of Tlc.

"I am a true fan. I love these ladies."

The biopic is due to air on U.S. Tv network Vh1.