Her credits include writing The Devil Wears Prada (2006), 27 Dresses (2008), Morning Glory (2010), We Bought a Zoo (2011) and co-creating The CW's Crazy Ex-Girlfriend.
[4] A script she wrote during a six-week course in screenwriting at New York University helped her get an agent, and, in 1991, she moved to Los Angeles.
[6] She adapted Lauren Weisberger’s novel The Devil Wears Prada into the 2006 film of the same name, directed by David Frankel and starring Meryl Streep, Anne Hathaway and Emily Blunt.
[6] The film took its place quickly as a classic romantic comedy, telling the story of a bridesmaid of twenty-seven weddings finding her own love.
[9] Her next produced movie was 2010's Morning Glory, starring Rachel McAdams, Harrison Ford and Diane Keaton, followed shortly after by 2011's adaptation I Don't Know How She Does It, with Sarah Jessica Parker and Pierce Brosnan.
[10] McKenna returned to television in 2015, when she teamed up with singer and comedian Rachel Bloom to create the romantic musical comedy-drama Crazy Ex-Girlfriend.
When Showtime opted not to proceed, McKenna and Bloom reworked the series for The CW, including expanding it into an hour-long format.
[19] The following October, she teamed up with Rene Gube, a producer and recurring guest star on Crazy Ex-Girlfriend, for a single-camera comedy called Big Men that has been set up at CBS.
[21] McKenna was the first ever guest on the screenwriting podcast Scriptnotes, hosted by John August and Craig Mazin.