Kim Kardashian [1] is 33 — can you believe all these stars, including Beyoncé, are too? While you're at it, take a look at a bunch of other celebrities whose real ages might surprise you [2] (don't you want Pharrell's antiaging advice?).

Beyoncé

Ryan Gosling

Jessica Alba

Alessandra Ambrosio

Christina Aguilera

Paris Hilton

Jake Gyllenhaal

Autumn Reeser

Zachary Levi

Jenna Dewan

Julia Stiles

Bryce Dallas Howard

Ben Savage

Danielle Fishel