13 Going On 30

13 Going On 30 (also known as Suddenly 30 in Australia and 13 Love 30 In Japan) is a 2004 comedy movie starring Jennifer Garner. It has a similar premise to the films Big, Wish Upon a Star, and Freaky Friday.

Plot

Jenna Rink, a girl celebrating her thirteenth birthday in 1987, wishes to be thirty years old in the hope that it would cause her to overcome her unpopularity at school. Jenna especially wants to join the "Six Chicks", a clique at her school led by Lucy "Tom-Tom" Wyman, who takes advantage of Jenna's desire to fit in by manipulating her. Jenna's best friend, Matt Flamhaff, gives her as birthday presents a doll dream house he built for her and a packet of "magic wishing dust".

Tom-Tom dashes Jenna's hopes of joining the Six Chicks by pulling a cruel practical joke on her during a game of "seven minutes in heaven". Jenna, mistakingly thinking Matt was responsible, gets angry with him and wishes to be "thirty, flirty and thriving," unknowingly sprinkled with her doll house's magic wishing dust. Seconds later, Jenna awakens as a thirty-year-old woman living in a Fifth Avenue apartment, without her friends or family. It is now the year 2004, but Jenna has no memory of the seventeen years that have passed since her thirteenth birthday

30-year-old Jenna's best friend Lucy -- no longer nicknamed Tom-Tom -- drives her to her work office. Soon, Jenna realizes that she works for "Poise", her favorite fashion magazine in 1987. Without her best friend from 1987, Jenna asks her secretary to track down Matt. Jenna discovers that they have been estranged since high school when Jenna fell in with the in-crowd, and that Matt is now engaged.

This is only complicated by the fact that Jenna has become a shadow of her former self - not only is she generally despised by all she comes into contact with, it is also suspected she was giving ideas from her work to a rival magazine, Sparkle. Jenna slowly realizes that the person she has become is neither trustworthy nor likeable, and unknowingly begins to reverse the situation by distancing herself from her new, shallow boyfriend, acting kinder and more honest to her coworkers and friends, and trying to restore her and Matt's relationship.

Over several outings and working together on a magazine project, Jenn becomes friends with Matt again. Although Matt is already engaged and Jenna already has a boyfriend, they eventually kiss during a nighttime walk. Dazed, Matt realizes he really loves Jenna, but cannot change the past. After Jenna later overhears Lucy badmouthing her to a co-worker behind her back at work, Jenna sadly realizes that what she thought she wanted isn't important after all. She heads back to her hometown in New Jersey to reunite with her parents and reminisce by looking through old school yearbooks and other items from her school days. These inspire her on her return to Manhattan.

After arranging a magazine photo shoot with Matt, then making a successful presentation for a planned revamp for Poise, Jenna prepares for the revamp when she gets bad news from the magazine's publisher: Poise is shutting down operations because all of the work she put into the magazine's relaunch ended up in the pages of Sparkle. Jenna quickly finds out that she herself was the one responsible for sabotaging Poise from within by sending their material to Sparkle for months. Learning this, Lucy cons Matt into signing over the rights to the photos from the relaunch shoot to her. She accepts a position of editor-in-chief of "Sparkle", using Jenna's work as her own like she did when she was thirteen.