1. It’s been 13 years since the classic Jennifer Garner rom-com 13 Going on 30 came out. If you remember seeing it in theaters (like I do) you’re definitely an old person. Congrats.

Columbia Pictures

2. It turns out that stars really ARE just like us! They age too!

Columbia Pictures

Observe.

4. Jimmy Fallon was 30

Peter Kramer / Getty Images

Orange you glad he found real clothes?

6. Victoria Beckham was 30

Jamie Mcdonald / Getty Images

Cameo: 5-year-old Brooklyn Beckham.

8. Elizabeth Banks was 30

Evan Agostini / Getty Images

Her style was just… pitch perfect.

9. Emma Watson was 13

Steve Finn / Getty Images

Harry Potter and the Super-Bored Teenager.

13. Willa Holland was 13

Peter Kramer / Getty Images

Marissa Cooper would be so proud (RIP).

15. Thomas Brodie-Sangster was 13

Gareth Cattermole / Getty Images

Stripes Actually.

16. Leonardo DiCaprio was 30

Kevin Winter / Getty Images

More like thirsty and flirty and thriving.

17. Christa B. Allen was…almost 13

Mark Mainz / Getty Images

Even though she played 13-year-old Jenna Rink in the movie, she was 12 at the premiere.

18. …And Jennifer Garner was 32.

Mark Mainz / Getty Images

32 going on PERFECT.

Check out more articles on BuzzFeed.com!