Continuity: In the scene where Hannah gives her valedictorian speech at the end of the movie, she congratulates the 2002 graduates, but the tassel on her mortar board says 2001.
Great sites
Mistakes
When Lavinia is approaching Suzette with the rake, Suzette moves the S on her necklace up so it's visible. In the next shot it's not visible. It continues to change throughout the scene. See more...
The Banger Sisters mistakes
Continuity: When Goldie Hawn is in the bathtub, and Harry answers the phone, as she turns on her back in the tub you can see that she is wearing a black bra when the bubbles move back.
Continuity: When Lavinia is approaching Suzette with the rake, Suzette moves the S on her necklace up so it's visible. In the next shot it's not visible. It continues to change throughout the scene.