Audiences gearing up for something sweet like Bridesmaids need to adjust. Bachelorette, directed by Leslye Headland, who adapted her play for the screen, shows no mercy in mixing mirth and malice. The bridesmaids in this comedy – control-freak Regan (Kirsten Dunst), acid-tongued Gena (Lizzy Caplan) and cokehead Katie (Isla Fisher) – are hardly overjoyed to play handmaidens to Becky (Rebel Wilson), the overweight girl they used to call “Pig Face” in high school. To rub salt further into the wounds of these singletons, Becky is marrying one of New York’s hottest and richest bachelors. Yes, there are guys in this movie, but the ladies seize control from the start. Dunst, Caplan and Fisher make a delicious trio as they stir up a bitches’ brew of revenge against poor Becky. Headland can write zingers that would make the cruelest bridezilla blush. And Caplan’s treatise on the art of the blow job is time-capsule worthy. Sadly, Bachelorette is a comic cocktail that goes heavy on the bitters. That’s no way to end a wedding.