Serena Williams Steps Out In A Thigh High Slit AND A Crop Top

The tennis champ slayed at the premiere of her documentary.

You know what they say -- double the outfits, double the fun.

Serena Williams served up ultimate glam realness at the premiere of her eponymous documentary, "Serena." Clad in a shimmering gold gown with a low neck and a super high slit, the tennis champion looked downright stunning.

Wow.
Wow.

Even fashionable friend Anna Wintour approved:

"What, this old thing?"
"What, this old thing?"

But Williams showed off her ever-versatile style in a completely different look for the after party: a tight white crop top, what appear to be leather cropped pants and patterned pumps.

Party time!
Party time!

Williams is undoubtedly most known for her stellar tennis skills, but she's also emerged as a force in the fashion industry. That notion was more evident than ever at the premiere: The event drew guests like Wintour, editor of American Vogue, and iconic designer Vera Wang:

Besties!
Besties!

We're totally in love with her two looks from the evening -- and we don't mean that in tennis terms.

25 Photos Of Serena Williams Dominating 2015