Continuity mistake: When Annie and Helen are taking turns toasting Lillian, Annie goes up for a second time. In the close shot, she is holding the microphone in her left hand and a champagne flute in her right. The camera goes to audience, and when it is back to her, the flute and the mic have switched hands. In the next wide shot, the are back to their original position.
Continuity mistake: Melissa McCarthy wears an ace bandage on her left wrist throughout the movie. In the bridal shower scene the bandage is on her right wrist.