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Wait, Sandra Bullock is ... 50?! This birthday superstar is a kid at heart

Yeah. We can't believe it, either.In a seemingly impossible time warp, Sandra Bullock hits the half-century mark today. Did we not just crown her Miss Congeniality? Hit the road with her in "Speed"? With this milestone birthday, the Oscar-winning mom has seriously scrambled our age detector. Sure, you could say it’s because she looks slammin'. But we say her silly side is what really keeps h
Image: Sandra Bullock in 2001 and 2014
TODAY

Yeah. We can't believe it, either.

In a seemingly impossible time warp, Sandra Bullock hits the half-century mark today. Did we not just crown her Miss Congeniality? Hit the road with her in "Speed"? With this milestone birthday, the Oscar-winning mom has seriously scrambled our age detector. 

Images: Sandra Bullock in 2001 and 2014
For Bullock, seen here in 2001 and 2014, age ain’t nothing but a mind-boggling number that defies all laws of mathematics.Today

Sure, you could say it’s because she looks slammin'. But we say her silly side is what really keeps her young. Here's a look at the fun-loving star embracing her inner kid.

Like most whippersnappers, Bullock doesn't mind a little mud.

Image: Sandra Bullock poses for a photo as she is immortalized with a hand and footprint ceremony at TCL Chinese Theatre
Jason Merritt / Today

She's into slimy stuff, too. Well, kind of. 

Actress Sandra Bullock and actor Neil Patrick Harris speak onstage during Nickelodeon's 26th Annual Kids' Choice Awards in 2013
Today

Taking piano lessons from "Big" kid Tom Hanks is a major key to her pep.

And she knows you're never too old to play astronaut.

Image: Sandra Bullock in \"Gravity\"
Today

Hold back the giggles? She doesn't even try.

Image: Sandra Bullock and George Clooney at an official screening of \"Gravity\"
Today

Once you've booty-bounced Betty White, you have way too much to laugh about.

Image: Betty White and Sandra Bullock dancing in 2012
Today

Happy birthday, Sandra Bullock! Here's wishing you another fabulous decade.

Actress-producer-philanthropist Sandra Bullock has played an astronaut in trouble, a feisty FBI agent and more.