You Again (2010)

Continuity mistake: In Joanna's bridal shower she gives a necklace to Marni. When Marni is talking to her nanny the necklace disappear between shots.

rrmorfeo

Marni: High school was a horror movie. This weekend is the sequel.

Trivia: The Marni family's home in this movie is the same house Jamie Lee Curtis resided in in the 2003 movie Freaky Friday.