This is another spin on an old idea, largely working thanks to a childish performance from Jennifer Garner. Story-wise, it's nothing special.

Script: 6

This is another take on these "children grow up overnight" films that became a thing after Big. The basic plot is typical for a romantic comedy, but there are derails and seasoning that make it stand out.

There are good gags but also many that are pretty childish and even inappropriate, such as the stripe tease scene or Jenna asking the little boy out. Other than the occasional laugh, there isn't much emotional depth.

All in all, this is a film about friendship and standing up for who you are. No one should let past mistakes define themselves.

Main cast: 8

Jennifer Garner is great as a 13-year-old in a 30-year-old's body, having to figure out what has happened to her life the past 18 years. She captures the adult version of Jenna well, as does Mark Ruffalo with Matty and Judy Greer with Lucy.

Supporting cast: 9

Andy Serkis is lovingly bonkers as Jenna's boss and easily turns out as the best character in the film. A special nod to Marcia DeBonis, who portrays the greatest assistant never lived.

Protagonist & antagonist: 8

Jenna is cute, extremely childish but also quick to tackle obstacles in her path. She remains likeable throughout the movie.

Lucy initially seems to have grown up, but we soon learn that she is the most childish of them all. In her own words: old ways die hard.

Production: 6

The production and cinematography aren't particularly exciting but keep the film firmly together.

Post-production: 6

Once again a movie utilizing a soundtrack true to its time, mixing early 2000s music with classics from the 80s.

Atmosphere: 7

At best, the movie is funny, warm and cute. At worst it ends up being awkward and difficult to enjoy. A real lack of romantic tension between the two leads is a problem.

Pacing: 7

It's pretty nicely paced, even though you know where the story is heading. Some padding in the form of additional scenes that do very little to improve the plot drag the story out somewhat.

Expectations: 7

The film ends up being slightly above average but there are better and funnier movies about the same subject.

Replay value: 7

A lighthearted summer movie like this one survives several replays now and then.

Score: 71/120