Sasha Pieterse and Janel Parrish to star in 'Pretty Little Liars' spinoff

Sept. 25 (UPI) -- Freeform says it has ordered a Pretty Little Liars spinoff called The Perfectionists.

Sasha Pieterse and Janel Parrish are to reprise their roles in the young-adult drama pilot.

The announcement was made Monday by Karey Burke, Freeform's executive vice president of programming and development.

  "At Freeform, we are committed to delivering shows that push boundaries and become a part of our viewers' lives. Pretty Little Liars was a cultural phenomenon, so it's no wonder fans wanted more," said Burke in a statement. "We can't wait to continue Marlene King's rich and revolutionary storytelling with a new crop of leading ladies from Beacon Heights who will hold just as many secrets and lies as Rosewood did."

"I'm beyond excited to continue my collaboration with Sara Shepard, Alloy, Freeform and Warner Horizon," added writer-producer Marlene King. "I can't wait to introduce our fans -- and Sasha and Janel -- to a new world of thrills and chills in Beacon Heights."

Pretty Little Liars: The Perfectionists is based on the popular book series written by Sara Shepard, who also penned the Pretty Little Liars novels.