You Again

You Again, 2010 comedy and romance directed by Andy Fickman and staring Kristen Bell, Odette Annable, Sigourney Weaver, Jamie Lee Curtis, Betty White, and Victor Garber.

When former high school loser Marci Olsen realizes her brother is about to marry her high school rival Joanna, she sets out to expose the fiancée's true colours. Things get out of hand when it turns out that her mom Gail and the bride's aunt Ramona are in a similar situation.

In need of some Wiki Magic.

This work contains the following tropes

 * Alpha Bitch: Joanna, formerly.
 * Fun With Acronyms: Marci Oliva Olsen. M.O.O.
 * Generation Xerox: Played with. Marni was a dork in school and Joanna was the Alpha Bitch. While the same situation applies to Gail and Ramona, it was Gail who was the popular one and Ramona always left in the dust.
 * Here We Go Again: Grandma Bunny turns out to be an old rival of Joanna's grandma Helen.
 * Teens Are Monsters
 * Took a Level In Kindness: Joanna, though it takes Marni the entire movie to realize it.
 * Took a Level In Jerkass: Marni does some low things trying to get back at Joanna, and Joanna herself regresses to her former Alpha Bitch personality partway through the movie.