未婚女子

雷根（克尔斯滕·邓斯特 Kirsten Dunst 饰），吉娜（丽兹·卡潘 Lizzy Caplan 饰）和凯蒂（艾拉·菲舍尔 Isla Fisher 饰）是学生时代的好友，年少时期的轻狂为三个女人带来的美好的回忆，但对另一个女孩贝姬（瑞贝尔·威尔森 Rebel Wilson 饰）来说，事情就完全不同了。原来，心宽体胖的贝姬曾经经常遭到雷根一伙人的嘲笑，她们甚至为她取了“猪脸”这样一个可笑又愚蠢的外号。 　　时间流逝，贝姬即将结婚的消息犹如一枚炸弹丢到了三个女人的身边，不仅如此，贝姬还邀请了她们来做她的伴娘，“猪脸”都有了老公，三个漂亮的单身女人感到了危机。在婚礼之前，雷根决定为贝姬办一场单身派对，但此时的她不会想到，这个派对会带来怎样的麻烦与疯狂。On the night of one of their old high school friend's wedding three irresponsible and capricious bridesmaids reunite for one last bachelorette bacchanal in the Big Apple. They unintentionally create a mess of their best friend Becky's wedding dress, before she marries her sweetheart Dale. They attempt to repair the situation by spending the evening before and morning of the wedding desperate to get the dress to Becky on time before the wedding starts, whilst discovering themselves and what they truly want from their lives along the way.