When Becky is told to unhook her bra to spill out her large breasts to distract the zombies, she does this. However, later in the film, Becky is seen back with her bra on, despite the zombies still running amok.
Throughout most of the movie Bunny (Dora Pereli) is wearing a gray shirt, however when the characters go to the gym after creating the anti-zombie spray she is wearing a white shirt. In the scene immediately following this she is once again wearing the gray shirt.
At one hour and ten minutes, a microphone pack can seen been under and sticking out of the bottom of Chrissy's shirt. It can also be seen two more times a minute later.
Bunny and Bibi are the first ones to discover that the zombies can be tamed by boobs, yet they run and put clothes immediately after they figured this out. They never use the tactic again, despite having proven that it will keep you alive.