Bride Wars (2009)

Emma and Liv are best friends who have planned every detail of their weddings since they first witnessed a wedding at the Plaza Hotel. Therefore, they both have made it lifetime priority to be married in the same location.

The movie begins with the two women getting engaged at the shared age of 26. They then schedule their weddings with New York's most famous wedding planner, but due to a clerical error they're scheduled to have a wedding on the same day. A week of passive aggressive hostility passes before the two women make it clear that neither will compromise, especially after Liv tries to take advantage of Emma's passive nature and outrages Emma in the process. During this time Emma's fiance, Fletcher, begins to show signs of being controlling.

The women both attempt to sabotage the other's wedding, including Liv making Emma's tan turn bright orange, Emma tampering with Liv's hair dye to make it turn Liv's hair blue-white, Emma showing up to Liv's bachelorette party to out-dance her, and Emma secretly sending Liv chocolate and lollies to make her not fit into her dress. After the latter event Emma and her fiance get into an argument regarding Emma's manic behavior of sabotaging Liv's wedding and their friendship.

Both brides-to-be are then shown to be in the Plaza very shortly before they're due to be wed, separately. Right before Liv leaves to begin her march to the altar she tells her assistant to play the footage from a CD on a projection screen in Emma's part of the plaza. The CD contains a montage of memorable events in Emma's life, whereas the CD Liv had already set up (sabotage) to play contained a clip of Emma drunk and dancing wildly on a previous spring break. Liv's assistant drops the CD behind a flower vase while muttering, "you'll thank me one day", to himself.

Emma begins her walk down the aisle with the best man but stops when the footage of her spring break is shown. She loses her temper completely and tackles Liv after sprinting to the other section of the plaza. The two brides wrestle in their dresses on the floor while the rest of the room looks on, the people closest to the brides having decided it would be best to let the brides resolve the problem. After tussling Emma and Liv lay on the ground panting, and then make up almost instantly. Emma stands up and walks over to Fletcher who is upset at Emma's behavior. Emma tells Fletcher she is not the person he fell in love with and she is unwilling to change to stay with him. Liv's wedding resumes with Emma happily participating, dancing with Nate, Liv's brother.

The movie picks up a year later when Emma and Liv meet up for "drinks", during which it's revealed that Emma married Nate. Emma and Liv also reveal to each other that they're pregnant and that their due dates are the same, March 3.