Keegan Connor Tracy (born December 3, 1971) is a Canadian actress and author. She is best known for her roles as Audrey Malone in the Showtime comedy-drama series Beggars and Choosers (1999–2000), the Blue Fairy in the ABC fantasy drama series Once Upon a Time (2011–18), Miss Blair Watson in the A&E drama series Bates Motel (2013–16), and Professor Lipson in the Syfy fantasy series The Magicians (2016–2020). Tracy's other notable work includes roles on the television series Jake 2.0, The 4400, Stargate SG-1, Supernatural, Psych, and Battlestar Galactica.