Chopra opted for a white embellished strapless gown by Lebanese designer Zuhair Murad at her maiden Oscars where she presented.
Blanchett rocked a seafoam gown with floral embellishments by Armani Prive. She also sported a brand new short hairdo.
Robbie turned heads in a plunging gold Tom Ford gown. Made of a metallic sequinned fabric with a snakeskin-like texture, her gown featured long-sleeves that fitted her slender arms perfectly.
Actress Reese Witherspoon stood out in a purple long elegant gown. Adding bright red lippy and wearing her hair loose and straight, it was an effortless look.
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"Room" actress Brie Larson went for a plunging blue Gucci gown, which was marked with ruffled skirt and train, along with a sparkling belt. The young star opted for a a natural look with her hair elegantly tied back.
Singer-actress Lady Gaga went low-key with a white Brandon Maxwell suit gown. The star showed a hint of her quirky style in the one-piece, but left her orange Bowie-inspired hair behind as she once again went au natural.
Actress Jennifer Garner looked classic beauty in a black Atelier Versace low-cut number, flashing a hint of her leg in sky-high stilettos.
Actress-model Olivia Munn was vibrant in an orange Stella McCartney one-shoulder, while Daisy Ridley shone out from the crowd in a silver and light blue Chanel dress. The star showed off her legs in the low-cut number, and added high matching heels.
"Modern Family" star Sofia Vergara opted for stylish dark tones. The brunette beauty stood out in a stunning navy Marchesa gown. With giant earrings and her hair tied back, she looked elegant.
Alicia Vikander went simple with a huge radiant yellow Louis Vuitton gown, hiding her figure beneath the one-piece. The light make-up made her look pale.
Actress Kate Winslet looked simple yet stylish in a Ralph Lauren black off-shoulder dress which team with Nirav Modi jewellery. Jennifer Lawrence cut a pretty picture in a black lace ruffle gown by Dior.
Among the men, Leonardo DiCaprio, Eddie Redmayne and singer Sam Smith stood out, looking dapper in black-and-white tuxedo.