Liv (Kate Hudson) and Emma (Anne Hathaway) living in Manhattan are a pair of sisters who are like brothers and sisters and grew up together. One day in childhood, the two witnessed a dream wedding at the Holiday Inn on Fifth Avenue. From then on, the dream of holding a wedding here took root in their hearts. In the blink of an eye, more than 20 years have passed. Liv has become a lawyer with some achievements, and Emma teaches in a school. They have also gained a happy love. The wedding date is imminent, and the two girls are busy for the wedding and have agreed to serve as each other's bridesmaids. However, what they didn't expect was that both of them not only used the Holiday Inn as the ceremony venue, but also invited the same emcee, and what's more, their weddings were on the same day. This means that one party will make concessions. For the sake of their childhood dreams, the two friends did not give in to each other, and thus launched a fierce and interesting bride war... This film won the 2009 Teen Choice Award for Best Comedy Actress (Anne Hathaway).