Isla Fisher and Rebel Wilson share the same birthdays, 3 Feb. However, Isla is 4 years older than Rebel, and they play high school friends in this movie. Both Lizzy Caplan and Kirsten Dunst were born 1982, and their birthdays fall on months which have 30 days (Kirsten: 30th April 1982, Lizzy: 30th June 1982)