24 Must-See Throwback Photos of Kylie Jenner

Days ahead of her 21st birthday, Kylie opted for a walk down memory lane with some adorable pics of her younger self.

Anyone else hoping to see Kylie and Caitlyn Jenner recreate this super sweet candid moment at a bowling birthday party?

And this one too, duh. Especially the leopard print and glow necklace combo.

Because covering yourself in stickers and falling asleep in bizarre places is just a part of childhood.

"These #TBT pics of me as a baby are pretty cute, right?!" Stormi's mom wrote on her website, sharing throwback snaps of herself as a baby. "They're even better because I have food on my face, lol. I guess I always liked posing for the camera!"

Ah, yes, back when they were considering alternative careers.

Why are we just now learning that Kylie was a cheerleader?

She, too, had to memorize a locker combo, and somehow this is shocking.

Here's to hoping for a Kylie curls revival.

There was a time when she needed a hat to tell people that, we guess.

Were we ever so young?

She was friends with Ariana?!

... and Selena?!

Rob was all about the bleached hair trend.

Dirty hair, don't care.

This was literally probably before Sofia Richie could watch PG-13 movies.

Get it.

Actually the cutest.

Bangs happened.

Time is so fleeting…

Just beginning to get those selfie skills down.

Some friends really are forever. (We're looking at you, Jordyn Woods!)

Wait, did we miss a beanie phase?