珍(凯瑟琳·海格尔 饰)是个完美伴娘,已经穿过27套伴娘服的她笃信真爱,可是面对自己暗恋许久的人——她的上司乔治,珍却总是爱在心,口难开。 一次派对上,珍的妹妹苔丝和乔治邂逅了,火热招摇的苔丝迅速攫住乔治的目光,事实上,苔丝就是个骄横跋扈的大小姐,但为了俘 获乔治的心,她编出种种谎言,装成温顺可爱的乖乖女,使两人关系迅速升温。不久,两人便打算闪电结婚,而珍则再一次被邀请成为伴娘……Two things about Jane: she never says no to her friends (she's been a bridesmaid 27 times and selflessly plans friends' weddings), and she's in love with her boss, George, nurturing dreams of a lovely, romantic wedding of her own. She meets Kevin, a cynical writer who finds her attractive, and that same week her flirtatious younger sister Tess comes to town. Jane silently watches George fall for Tess, a manipulative pretender. Worse, Jane may be called upon to plan their wedding. Meanwhile, Kevin tries to get Jane's attention and has an idea that may advance his career. Can Jane uncork her feelings?