17 people you probably forgot guest-starred on 'Pretty Little Liars'

ABC/FreeformThe Stars of ‘Pretty Little Liars,’ from left, Shay Mitchell, Troian Bellisario, Lucy Hale, and Ashley Benson.
  • “Pretty Little Liars” lasted for seven seasons on “Freeform.”
  • Several actors guest-starred on the drama series, like “American Idol” alum Adam Lambert.
  • Rumer Willis, dancer Maddie Ziegler, and real-life prosecutor Marcia Clark also appeared on “PLL.”
  • Visit Insider’s homepage for more stories.

From 2010 to 2017, “Pretty Little Liars” reigned on ABC Family/Freeform as one of the most popular teen dramas. The series, which starred Troian Bellisario, Ashley Benson, Lucy Hale, and Shay Mitchell, kept fans entertained with shocking moments, plot twists, and love triangles. The show even spawned a spinoff called “The Perfectionists,” which was cancelled after one season.

Throughout the show’s seven-season run, the fictional town of Rosewood was visited by several recognisable faces. This includes singers like Adam Lambert and actors like Rumer Willis.

Here are 17 celebrities you probably forgot guest-starred on “Pretty Little Liars.”

“Dumplin'” star Danielle Macdonald appeared on season five as an animal shelter employee named Cathy.

FreeformDanielle Macdonald on ‘Pretty Little Liars.’

Cathy visited the DiLaurentis house with a dog that Jessica wanted to adopt.

On season three, “American Idol” alum Adam Lambert performed during a Halloween party.

FreeformAdam Lambert on ‘Pretty Little Liars.’

He wore a pair of fake teeth to complete his vampire costume and had a brief conversation with Aria.

“The Gifted” star Emma Dumont played Katherine Daly, the daughter of the Senator of New York.

FreeformEmma Dumont on ‘Pretty Little Liars.’

She was interested in wearing one of Hanna’s designs to a fundraiser.

Marvel’s “Runaways” star Gregg Sulkin played Ezra’s younger brother named Wesley (also known as Wes).

FreeformGregg Sulkin on ‘Pretty Little Liars.’

Wes thought that if he got kicked out of prep school, he could distance himself from his family.

Olympic gold medalist Missy Franklin guest-starred as herself during season three.

FreeformMissy Franklin on ‘Pretty Little Liars.’

She was introduced to a starstruck Emily at The Brew, Rosewood’s popular coffee shop.

“Scream Queens” and “90210” star Diego Boneta had a recurring role as an employee at the Rosewood Country Club.

FreeformDiego Boneta on ‘Pretty Little Liars.’

His character, Alex Santiago, had a brief romance with Spencer.

Rumer Wilis appeared as a Habitat for Humanity supervisor named Zoe.

FreeformRumer Willis on ‘Pretty Little Liars.’

Zoe and Emily both worked together in Haiti.

Troian Bellisario’s real-life husband, Patrick J. Adams, guest-starred on season one.

FreeformPatrick J. Adams on ‘Pretty Little Liars.’

The “Suits” star played Hardy, Ezra’s friend and roommate from college.

“The Originals” star Claire Holt portrayed Samara, who had a short-lived relationship with Emily.

FreeformClaire Holt on ‘Pretty Little Liars.’

Samara worked for an LGBTQ group in her spare time.

Fellow “Originals” star Nathaniel Buzolic also had a recurring role on “PLL.”

FreeformNathaniel Buzolic on ‘Pretty Little Liars.’

His character, Dean Stavros, was a former drug addict who worked with Spencer to help her deal with her own addiction after returning from Radley Sanitarium.

On season one, “Teen Wolf” star Arden Cho had a short scene in the girl’s bathroom.

FreeformArden Cho on ‘Pretty Little Liars.’

Emily overheard Paige talking to her about scoring a date with a boy named Sean.

When the girls visited Ravenswood during season four, they encountered Brett Dier’s character named Luke Matheson.

FreeformBrett Dier on ‘Pretty Little Liars.’

Dier went on to star on the “PLL” spinoff series titled “Ravenswood.”

Dancer Maddie Ziegler performed a chilling routine on season six.

FreeformMaddie Ziegler on ‘Pretty Little Liars.’

She danced to a Claude Debussy piece called “Syrinx.”

“9-1-1” star Ryan Guzman played Aria’s self-defence instructor named Jake.

FreeformRyan Guzman on ‘Pretty Little Liars.’

Aria wanted to learn how to protect herself in case she got attacked by “A.”

Real-life prosecutor Marcia Clark appeared as a Rosewood district attorney named Sidney Barnes on season four.

FreeformMarcia Clark on ‘Pretty Little Liars.’

Sidney told Hanna’s mum, Ashley, that all the charges made against her were dropped.

“A Series of Unfortunate Events” star Robbie Amell played Eric Kahn, the older brother of Noel Kahn.

FreeformRobbie Amell on ‘Pretty Little Liars.’

He appeared during a party that occurred at Noel’s cabin during season three.

“Insatiable” star Chloe Bridges had a recurring part as Sydney Driscoll.

FreeformChloe Bridges on ‘Pretty Little Liars.’

She was part of the swim team with Emily.

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