My Best Friend's Wedding is a romantic comedy film starring Julia Roberts, Dermot Mulroney, and Cameron Diaz. The story revolves around Julianne, a woman who realizes she is in love with her best friend, Michael, just as he announces his engagement to another woman, Kimberly. Determined to win Michael back, Julianne hatches a plan to sabotage the wedding. As the wedding day approaches, Julianne must confront her own feelings and decide what truly matters. My Best Friend's Wedding is a heartwarming and humorous film that explores the complexities of love, friendship, and the choices we make.