Kylie Jenner is 20! Here's a Look at Her Best Birthday Outfits

Kylie Jenner turns 20 today! She's gone from cute tween on Keeping Up With the Kardashians to a beauty mogul with her own Kylie Cosmetics20th Birthday Edition makeup collection to show for it.

The special collection makes sense: Kylie's really into celebrating her birthdays, with both huge parties and even more dramatic outfits. Let's break down the major fashion components of a Kylie birthday bash (and what she wears as a birthday party guest).

To ring in her 20th birthday yesterday, Kylie wore a sporty all-white outfit with minimal makeup. And are those...sneakers? It was a surprise party, according to People, so that could explain her footwear.

The Kardashians included some interesting decorations at yesterday's Kylie birthday bash. Because it's not a party without a replica of your own butt sculpted out of ice, clearly.

This year's celebrations (so far) are totally subdued compared to previous Kylie birthday bashes. Last year, Kylie celebrated her 19th birthday for practically a week straight, hitting the town in this incredible skin-tight sheer Balmain jumpsuit. This look is dangerous.

For her 18th birthday, designer Nicolas Jebran whipped up a Swarovski crystals-encrusted gown just for Kylie, who accessorized with blonde bombshell hair. The price tag for the dress? A whopping $10,000. She didn't even wear it the entire night, writing on Instagram: "Bday outfit... Until I got uncomfortable lol."

Kylie landed a birthday Birkin to ring in her 18th bday, and a $320,000 Ferrari. Hermès looks affordable compared to that.

Here's what Kylie wears to other people's birthday parties (Kardashians and beyond).

She actually dressed like "Dirrty"-era Xtina to attend Christina Aguilera's 36th birthday blowout.

For her bestie Anastasia Karanikolaou's birthday, she went for a safety pin and zippers Versace-esque look.

For Kendall Jenner's over-the-top 21st birthday party, Kylie tried to steal the show in these lace-up Unravel leather pants and a see-through top.

But at Khloe's 32nd birthday last year, Kylie went out with a simple, pretty curve-hugging dress and just a few bracelets. Kind of like her own birthday party yesterday. You never know which Kylie you're going to get: decked out in leather chaps or fresh-faced. Don't ever change, Kylie! Happy birthday, and welcome to your twenties!