Bride Wars (2009)

Best friends Emma and Liv are excited to have their weddings at the Plaza Hotel in June, just like the wedding they saw as children. However, when they both choose June 6th as their wedding date, they become bitter rivals. The tension between them escalates as they play pranks on each other and try to sabotage their weddings. Eventually, they realize the importance of their friendship and reconcile. One year later, both Emma and Liv are pregnant and due on the same day.