Here's the Complete Cast of Freeform's 'Pretty Little Liars: The Perfectionists'

Freeform has rounded out the cast of its Pretty Little Liars spinoff, The Perfectionists.

The Perfectionists, currently a pilot at Freeform but fully expected to move forward, is based on the Sara Shepard book and is being adapted by Pretty Little Liars showrunner I. Marlene King. The project was first put into development at Freeform in November 2014, with King and Shepard, the author of the original Pretty Little Liars book, opting to connect it with the original hit.

Here's how Freeform describes Pretty Little Liars: The Perfectionists: "Everything about the town of Beacon Heights seems perfect, from their top-tier college to their overachieving residents. But nothing in Beacon Heights is as it appears to be. The stress of needing to be perfect leads to the town’s first murder. Behind every Perfectionist is a secret, a lie and a needed alibi."

In addition to the previously announced Sasha Pieterse, Janel Parrish and Sofia Carson, here's a look at the full pilot cast and who they're playing:

Sasha Pieterse will reprise her role of Alison DiLaurentis, the former queen bee whose mysterious disappearance rocked the small town of Rosewood

Janel Parrish will reprise her role as Mona Vanderwaal, Hanna Marin's best friend who was unmasked as the mysterious tormentor "A" at the end of the show’s second season and ultimately beat uber-villain A.D. at her own game.

Sofia Carson will play Ava, a trendsetting blogger and coder who strives to be a fashion icon.

Sydney Park (The Walking Dead) will play Caitlin, who is smart, driven and thrives under pressure. The perfect daughter of two perfect mothers, Caitlin has set her sights on following in her mother’s Senatorial footsteps.

Eli Brown, a newcomer, portrays Dylan, a gifted cellist who grew up feeling judged in his small hometown and now feels the need to be the best in all of his endeavors. He is deeply committed to his two passions, his music and his boyfriend, Andrew.

Kelly Rutherford (Gossip Girl) stars as Claire Hotchkiss, the matriarch of the Hotchkiss family. Claire (along with her husband) is the founder of Hotchkiss Industries and the respected Beacon Heights University. Claire believes perfection is attainable, and is the person who pulls the strings behind the scenes to get what she wants.

Hayley Erin (General Hospital) rounds out the cast in a mysterious, unnamed role.