Mandy Moore cut her hair short because she felt it suited the role; the movie producers weren't happy about it. In the end they compromised and had her wear hair extension for some of the movie and then have her having her hair cut put into the film.
When Lydia is in the kitchen ranting about her ex-husband, she is chopping carrots. The shot cuts away then cuts back to show her chopping the top off a zucchini. But, when the scene cuts away and back again, she is chopping the carrots again.
ALERT: When Macon goes to his car after the accident with Halley, you see the windshield is broken on the passengers (Halley's) side. As he pulls out, you can see that there is no damage to the front or sides of the car. Considering the accident involved driving into a tree, with the result being that Halley was admitted to the hospital with a broken left arm, the car would have had much more damage to it.
When Halley and Scarlett are hiding behind the ticket booth at the movie theater, the reflection in the glass does not match the surrounding shots that show what they are looking at.
Halley: Oh my god, no, no, no, I can not believe I didn't tell you this. The bimbo almost died of strangulation. Her wedding veil took on a life of its own and rebelled, and she had to like claw her way out and you know that woman could claw mom. It was so sad it was like, near death by wedding veil. So tragic isn't it?