Leggat was born in Hamilton, Ontario, and has Scottish and Irish ancestry on her mother's side.[2] Leggat began her theatrical training with Theatre Aquarius's Performing Arts Program under the direction of Lou Zamprogna. That same year, Leggat made her professional theatre debut playing Marta in Theatre Aquarius's production of The Sound of Music. Leggat went on to perform in several of the company's productions, including The Lion, The Witch And The Wardrobe, Cinderella, Anne of Green Gables, Jacob Two-Two Meets the Hooded Fang, Jekyll And Hyde and The Wizard of Oz. She also performed the role of Clara in The Nutcracker at the Hamilton Place Theatre. (오뜨랑에서 실시간으로 번역된 한글 프로필도 확인할 수 있어요) 2024년 Our Mother's Secret Affair에서 Diana 역을 맡았다. 2023년 Eulogy to Us에 출연했다. 2023년 Life with Luca에서 Casey MacDonald 역을 맡았다.