The wardrobe department reported that their initial designs for the dresses all looked too good on Katherine Heigl because of her figure, and they were hard-pressed to design bridesmaids dresses that would look bad on her.
Prints were shipped to some theaters under the fake title "Wardrobe".
Katherine Heigl is a few months younger than Malin Akerman, who plays her younger sister (by several years) in the film.
While Jane and Kevin are in the bar, you can hear a Josh Kelley song in the background. In real life, Josh Kelley is married to Katherine Heigl.