The library is open: Which looks won our vote on the red carpet, and which were a complete fail?
Photo: AP Images
Best: Lady Gaga
Nominated for the song "Til It Happens To You," the pop diva looked regal in all-white, channeling old Hollywood glamour with a hybrid gown that combined pants and an oversized train -- a couture creation by her stylist, Brandon Maxwell.
Best: Brie Larson
Brie Larson won her first Oscar for her lead performance in Room, wearing a flowy Gucci gown. The deep blue color and empress style, accessorized with fine jewelry, made one of the most elegant looks of the evening.
Best: Robin Roberts
Shout out to the stellar ABC host, who rocked her red carpet interviews in a form-fitting Badgley Mischka dress and jewelry by David Yurman.
Best: Margot Robbie
This gold snakeskin Tom Ford gown isn't the easiest to pull off, but it looks stunning on Robbie.
Best: Whoopi Goldberg
Who knew Whoopi was into body art? The Oscar winner showed off her tats in a black gown by Dames of New York, and her octopus hand jewelery piece was fierce.
Best: Daisy Ridley
The Star Wars actress looked fresh in Chanel Haute Couture
Best: Kerry Washington
The actress made a point for more diversity in Hollywood wearing a gladiator-esque Versace gown with leather details.
Best: Tina Fey
The comedian looked perfect in a purple Atelier Versace gown.
Best: Mindy Kaling
The Inside Out star was a vision in black and blue, wearing an Elizabeth Kennedy gown.
Best: Rachel McAdams
The Spotlight star wore a beautiful emerald gown by up-and-coming designer August Getty.
Best: Chris Rock
The comedian didn't hold back while hosting this year's telecast, looking dapper all the way in a white tuxedo jacket and black trousers, both custom-designed by Burberry.
Best: Dev Patel
The Slumdog Millionaire actor looked adorable in Burberry.
Best: Chadwick Boseman
The new Black Panther roared down the red carpet in custom Giorgio Armani.
Best: Henry Cavill
We'd love to see Superman come to our rescue in this Dunhill tuxedo. Swoon!
Best: Benicio del Torro
Snubbed by the Academy, the Sicario star was smoking-hot in Prada.
Best: Eddie Redmayne
Last year's winner served some Old World elegance in a velvet tux by Alexander McQueen
The Oscar-winning rapper/actor stole the spotlight in an ivory tuxedo with shawl label by Dolce & Gabbana
Best: The Weeknd
Nominated for his Fifty Shades of Grey song, Abel Tesfaye definitely earned his spot in our best-dressed list with this tailored Dior Homme suit.
Best: Finn Wittrock
Here to support The Big Short, Wittrock had no shortcomings on the red carpet.
Best: Sam Smith
Although he won an Oscar for what is arguably the worst James Bond theme song ever written, the British crooner looked handsome in his Dunhill three-piece tux. Now, keep your hands off Tom Daley and do your gay history homework!
Best: Pharrell Williams & Helen Lasichanh
With his new blonde buzz cut, Pharrell looks like a prom king who seems to be ageing backwards. What's his secret?
Best: Julianne Moore & Bart Freundlich
Last year's Best Actress winner wore Chanel again, and she brought her handsome husband with her.
Best: Olivia Wilde & Jason Sudeikis
Wearing Valentino, Wilde looked ready for open-heart surgery (in a good way) while her BF Sudeikis just keeps getting hotter and hotter.
Best: Tom Hardy & Charlotte Riley
After owning most of 2016, Hardy ruled the red carpet in a perfect three-piece tux, with extra support from his wife.
Worst: Charlotte Rampling
Joan of Arc called: She needs her coat of mail back.
Worst: Jared Leto
The male equivalent of the flamenco lady emoji.
Worst: Jennifer Lawrence
J-Law gave us a throwback to Christina Aguilera's Dirrty years -- more appropriate for an off-Broadway Moulin Rouge revival than an award show.
Worst: Cate Blanchett
When you dress like you think you're going to win, but you don't.
Worst: Leonardo DiCaprio
We know Leo doesn't give a damn about red carpet looks, but that suit is still one size too small.
Worst: Saoirse Ronan
Girl, aren't you cold? This bikini top would look great at the club in Miami, but not everyone can be Kendall Jenner.
Worst: Emily Blunt
Although she's already pregnant, Emily Blunt felt the need to add extra weight to her silhouette with some ugly embellishments.
Worst: Kevin Hart
Those plastic rocks around the hems... Just no.
Worst: Alicia Vikander
Alicia Vikander's dress made her look like a deflated soufflé --or an uncooked omelette? We can't decide.
Worst: Rooney Mara
My grandmother has a tablecloth just like that.
Worst: Kate Winslet
We're not feeling this oil spill couture on Winslet, and the thick-framed glasses she wore during the telecast were a complete disaster. But not as disastrous as her Golden Globe acceptance speeches.