Started off her career modeling with Abercrombie and Fitch.
Is the daughter of David Cassidy and Sherry Williams. Granddaughter of Jack Cassidy and Evelyn Ward. Half-sister of Beau Cassidy. Former stepdaughter of Sue Shifrin.
She is the Cousin of Caitlin Cassidy, John Cassidy, and Jack Cassidy.
Half-Niece of Shaun Cassidy, Patrick Cassidy, and Ryan Cassidy, the sons of her grandfather’s marriage to Shirley Jones.
Brad Hargreaves, the drummer for Third Eye Blind, is Katie’s brother-in-law.
Did a cover of her father’s song, “I Think I Love You“.
Due to her recurring roles in horror films, she is regarded as a modern-day “scream queen”.
Jesse McCartney wrote his songs “Tell Her”, “She’s No You”, and “Bleeding Love” for Katie.
Was going to appear in a 2007 remake of Revenge of the Nerds (1984), but after three weeks of filming the project was canceled.
Has remained close with her Supernatural (2005) co-stars, Jared Padalecki and Jensen Ackles.
She is a skilled guitarist and pianist.
She was a cheerleader in high school.
Katie is named after Katharine Hepburn.
Katie is a mad Seattle Seahawks NFL supporter.
Co-created a fashion blog called Tomboy KC and co-designed an eyewear line for Glasses.com.
She lost a significant amount of weight during the production of Arrow Season 2, to better convey Laurel’s addictions to painkillers and alcohol. The following season, she bulked up in the gym as Laurel suited up as Black Canary.
Has starred in 3 horror movie remakes When a Stranger Calls (2006), Black Christmas (2006), and A Nightmare on Elm Street (2010).
Has played the same character (Laurel Lance / Black Canary) in 3 different series: Arrow (2012), The Flash (2014), and Legends of Tomorrow (2016).
Though Laurel is meant to be a couple of years older than Sara on Arrow (2012), Katie is only about a month older than Caity Lotz.
Participated in the creation of Laurel Lance’s Black Canary costume seen on Arrow (2012).
Stars as DC Comics icon Dinah Laurel Lance/Black Canary/Black Siren on Arrow (2012). In real life, she went to prom with Tyler Hoechlin who portrayed Clark Kent/Superman in Supergirl (2015).
Cried when she first put on Sara Lance/The Canary’s black jacket in the early production of Arrow (2012), before her character of Laurel Lance took the Black Canary mantle.
One of three Supernatural (2005) guest stars linked to the role of the iconic DC heroine Black Canary. Alaina Huffman portrayed Dinah Lance in Smallville (2001), while Alona Tal has been strongly rumored for the role in the DC Extended Universe.
She does her own singing in the movie “Cover Versions“.
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