Originally, the film was conceived as a teen comedy with Emma Roberts as Liv and Nikki Reed as Emma.
One shot during the reception includes a complicated series of dance steps. After many failed attempts, an extra who happened to be a dance instructor asked to teach the actors how to perform the steps correctly.
Several wives and girlfriends of the 2009 Red Sox players were extras in the wedding shower scene.
Liv's engagement ring is a five carat Tiffany Novo cushion cut.