When the girls are playing finals and Wendy changes and goes to see Becca, Becca has her hair with pigtails, and on the same scene, it changes to a ponytail.
In one of the first soccer games, using a silver ball they score a goal. But when the camera goes in on a close up it shows an "old school" style of soccer ball going into the net.
California personalized license plates have a maximum of 7 characters. The Mercedes in the beginning of the film with the plate "Majestic" has 8 characters.
When Wendy is at the beauty salon talking with Harry and Tony about Lorenzo Vincenzo coming, she says that Tony cried when they took "Friends" off the air. However, Wendy is referring to the 2004 series finale.