Happy birthday, Britney Spears! Yes, it's true: Today is Brit's 33rd birthday, and we, of course, are celebrating in the best way we know how—with GIFs. Since Ms. Spears has upwards of 35 videos, we figured now would be as good a day as any to highlight her best beauty looks. Let's kick this thing off because there is, obviously, a lot to look at—we wanna finish before she turns 34.

Related: 13 Life-Altering Questions Britney Spears Asked In Her Lyrics — Answered For Her Birthday

TOXIC

In the "Toxic" video, Britney's very shimmery eye shadow is accentuated by her effortless winking.

Bright red hair calls for matching eyebrows, right?

Brit ditches the red brows for her natural hue and heavily—I mean, heavily—lined eyes. Eyeliner was so ~the thing~ in 2004.

And, finally, for her iconic rhinestone look—which were glued to her body, not a bodysuit!—Brit accessorized with gems in the corner of her eyes. Also, blonde brows. You don't appreciate how much brow #WERK went into this video until you watch GIFs of it on repeat.

WORK B---H

For "Work B----h," Britney went with fresh skin and lightly lined eyes. With the exception of her very early videos, this may be her most low-key music video look to date.

SOMETIMES

See? BB Brit was all about some light brown eye shadow and a mauve lip in 1999.

SLAVE 4 U

Meanwhile, in "Slave 4 U," Britney was so dewy she was, like, actually glistening. Also, dem lashes.

...BABY ONE MORE TIME

Our first glimpse of Britney ever was with a pair of unforgettable fuzzy scrunchies and some softly lined eyes.

Even for gym, Britney kept her beauty game on lock—check that sparkly gold eye shadow.

LUCKY

To win her Oscar (in "Lucky," that is), Britney wore a sparkly silver dress, matching eye shadow, soft curls, and brown lip gloss. Britney <3 brown lips.

Of course, she also has this pre-Lauren Conrad cry running mascara situation, but that's not a look I'd recommend wearing out of the house.

ME AGAINST THE MUSIC

See? Here it is again, in 2003—three years after the "Lucky" video—in "Me Against The Music." She ditched the silver shimmer for, perhaps, the smokiest eye of all time.

CRAZY

For "Crazy," Britney was a picture of tanned perfection.

How'd she get that glow, though? Bronzer, obv. (Actually, IDK if that's what she's applying here, but let's just pretend, K?)

OOPS!...I DID IT AGAIN

And, of course, we end with Brit's most iconic video look: 2000's "Oops!...I Did It Again." Frosted white eye shadow? Check. Rosy skin? Check. Light pink—and shiny!—lips? Check.

Happy birthday, Britney!