Originally received an R rating for the use of the word "vagina" but after a petition and without any edits to the movie, the rating was reduced to PG-13.
When Carly meets Kate's brother Phil, she introduces herself as Carmela. When Kate walks Carly out she says, "Carmela? Really? Did you and Tony have fun living in Hong Kong? Or did Big Pussy and Meadow miss you too much?" All these names are main characters in The Sopranos (1999).
The role of Lydia originally was written for a Jewish girl. When Nick Cassavetes saw Nicki Minaj on American Idol (2002), he thought she was perfect for the role.
When Carly says to Kate, 'What, is this high school? Of course we slept together. We're adults!' This is a nod to John Tucker Must Die (2006) which has a very similar plot concept.