Continuity mistake: When Demi Moore shoots the Angels off the side of the observatory, the bullet intended for Drew Barrymore hits her in the lower abdomen. Later in the movie when the Angels wake up on the lawn below the observatory, the only bullet hole in Drew's shirt is on her upper left chest. (01:17:05 - 01:20:25)
Continuity mistake: At the end of the Angels' last fight with Demi Moore, we get a closeup of Demi's mouth. It is bloody and her teeth are covered in red. A few seconds later, after she falls backward through the floor and begins to scream, there is no blood on her face and her teeth are pearly white. (01:35:10)
Continuity mistake: When the Angels are sitting at the desks talking to mother superior, she asks the Angels to move forward. Watch Cameron Diaz. The first time she grasps her desk to bring it forward, it's on the front bit. Then it shows a shot from behind and she is grasping it from the sides, then back to the front shot and she is grasping it from the front again. (00:41:45)
Continuity mistake: At the start of the rooftop fighting scene, Madison opens the door and leaves it open. When the Angels pull her guns apart, the door is closed.
Continuity mistake: When the Angels find the photos on Emmet's body at the coal bowl, the picture of Helen Zaas shows her holding her Lucky lighter. If you look closely, you can see that it is completely different to the Lucky lighter which Dylan carries. The stars part of the 'Stars and Stripes' design cover the whole lid on Dylan's lighter, but on Helen Zaas's lighter it only covers half of the lid. (00:59:50)