The 19-year-old shares her least favorite '90s trends, plus the essential style lessons she learned from Reese Witherspoon and Kerry Washington.

There was vintage Alexander McQueen, bondage-infused Versace and so much more.

Hollywood stars played it pretty safe, but there were still some subtle fashion risks.

Highlights included Kate Middleton in an Alexander McQueen re-wear and Florence Pugh in a hot-pink Dries Van Noten cape

See the best-dressed celebrities of the night.

You impressed us this year, Hollywood.

They're setting a very high bar for awards season fashion.

These celebs are leading the way for self-expression through fashion.

Costume designer Jacqueline Durran also discusses Florence Pugh's Parisian fashion, Laura Dern's 'Victorian Hippie' paisley prints and more.

What did we do to deserve this cast?

Plus, Laura Dern!

It's like she stepped straight off the runway.

But are we surprised?

When Gucci sponsors a party, you know it's going to be good.

But don't worry, I'm fine now!

The actress approaches beauty with the knowledge that 'the planet is on fire.'

Models! Gowns! Oh, and movies!

Emmy-winner Alix Friedberg previews the evolving looks of the Monterey Five, plus newcomer Meryl Streep and her "detective" trench.

The ladies of Monterey are back.

The new film about the hoax of the decade also co-stars Diane Kruger and Courtney Love in current day Vika Gazinskaya.

These were the standout hair and makeup moments that stole the show.

The beloved actress is joined by Sasheer Zamata and Tavi Gevinson as the faces of Kate Spade's new fragrance.

That's the purpose of the annual Academy Awards Nominee Luncheon, right?

These were the most memorable hair and makeup moments from the evening.