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.
Copyright 2017 United Press International, Inc. (UPI). Any reproduction, republication, redistribution and/or modification of any UPI content is expressly prohibited without UPI's prior written consent.