<Tr> <Th> Occupation </Th> <Td> Actress, author </Td> </Tr> <Tr> <Th> Years active </Th> <Td> 1997--present </Td> </Tr> <P> Keegan Connor Tracy (born December 3, 1971) is a Canadian actress . 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 series Once Upon a Time (2011--18), Miss Blaire Watson in the A&E drama series Bates Motel (2013--16), and Professor Lipson in the Syfy fantasy series The Magicians (2016--18). Tracy's other notable work includes roles on the television series Stargate SG - 1, Jake 2.0, The 4400, Psych, Battlestar Galactica, and Supernatural . </P> <P> In film, she is best known for her roles as Kat Jennings in the supernatural horror film Final Destination 2 (2003), Mirabelle Keegan in the supernatural horror film White Noise (2005), Dolly Dupuyster in the comedy - drama film The Women (2008), Ellen in the drama film Words and Pictures (2013), and Queen Belle in the fantasy films Descendants (2015) and Descendants 2 (2017). </P>

Who plays the blue fairy in once upon a time