Lady Gaga looked every inch the Hollywood screen icon in a custom-made Alexander McQueen gown accessorised with gloves.

Emma Stone chose a copper Louis Vuitton dress.

Brie Larson looked majestic in a silver halterneck dress and Jimmy Choo heels.

Rachel Weisz played with textures with her scarlet dress.

Olivia Colman in  a forest green Prada gown with an embroidered black train.

Gemma Chan impressed in floor-length Valentino.

Charlize Theron in powder blue Dior.

Sarah Paulson made impact in a voluminous pink dress by Brandon Maxwell.

Kiki Layne’s pale pink dress featured an oversized bow.

Kacey Musgraves in pink Giambattista Valli ruffles.

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Bradley Cooper invited the two women in his life, girlfriend Irina Shayk (in Burberry) and his mother, Gloria Campano.

Glenn Close brought a sense of grandeur in her gold wrap dress with dramatic train.

Christian Bale was joined by his wife, Sibi Blazic.

Serena Williams made a surprise appearance.

Danai Gurira in Brock Collection and Letitia Wright wore equally opulent gowns.

Queen Latifah in a glamorous black dress.

Rami Malek kept it classic in a Saint Laurent tux.

Pharrell and wife Helen Lasichanh chose unconventional red carpet looks.

Singer Sza went for angelic white Vivienne Westwood Couture.

Constance Wu brightened the red carpet in yellow Versace.

Sisters Zoe and Emily Deschanel arrived together on the red carpet.

Melissa McCarthy’s cape added drama to her monochrome look.

Jennifer Lopez stayed true to her high-octane glamour.

Lucy Boynton went for a Rodarte purple dress.

Tessa Thompson in black and gold Chanel Couture.

Laura Dern wore a burgundy gown with ruffled detailing.

Lisa Bonet was pretty in pink.

Amy Adams in an elegant silver look.

Angela Bassett in a vibrant pink one-shoulder gown.

Helen Mirren joined the Oscars pink brigade in a plunging tulle dress.

Jennifer Hudson chose a red dress with a statement ruffle.

Tina Fey matched her cobalt dress to her satin clutch.

Maya Rudolph followed the evening’s trend for capes.

Laura Harrier opted for a baby blue Louis Vuitton gown with ornate embroidery.

Allison Janney in a chic velvet dress cinched in at the waist.

Emilia Clarke shimmered in a sparkling lilac dress by Balmain.

Ashley Graham looked elegant in an asymmetric black gown by Zac Posen.

Richard E Grant was joined by his daughter Olivia Grant.

Linda Cardellini made a statement in pink ruffles.

Chadwick Boseman bucked menswear red carpet convention in his shimmering jacket and statement shirt.

Octavia Spencer in an off-the-shoulder blue gown.

Regina King in understated Oscar de la Renta.

Spike Lee in a purple suit and matching hat.

Nicholas Hoult and Joe Alwyn arrived together.

Amandla Stenberg in a neutral gown with draped detailing.

Yalitza Aparicio wore a one-shoulder blue look.

Marie Kondo chose a pink dress with sequinned embellishment.

Elsie Fisher in a three-piece Thom Browne suit and patent ankle boots.

Michelle Yeoh’s gown was festooned in shimmering embellishment.

James McAvoy in a classic suit.

Henry Golding looked dapper in a tux.

Danielle MacDonald arrived in a red off-the-shoulder gown.

Marielle Heller and husband Jorma Taccone complemented one another in black and white looks.

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Willem Dafoe and Giada Colagrande chose a matching navy palette.

Mark Ronson in relaxed tailoring.

Billy Porter made an entrance in Christian Siriano.

Mahershala Ali and his wife Amatus-Sami Karim.