Chopra opted for a white embellished strapless gown by Lebanese designer Zuhair Murad at her maiden Oscars where she is also presenting.
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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Singer-actress Lady Gaga went low-key with a bridal white outfit. He 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.
"Room" actress Brie Larson went for a plunging blue dress, as she showed off her cleavage on the red carpet. The young star opted for a a natural look with her hair tied elegantly back.
Actress-model Olivia Munn was vibrant in an orange one-shoulder, while Daisy Ridley shone out from the crowd in silver and light blue gown. The star showed off her legs in the low-cut number, and added high matching heels.
Olivia Wilde took the plunge in a daring white gown. The star risked all in the revealing white dress, showing off major cleavage outside.
Alicia Vikander went simple with a radiant yellow dress. The "Danish Girl" star opted for a huge yellow and silver patterned gown, hiding her figure beneath the one-piece but the light make-up made her look pale.
Actress Kate Winslet looked simple yet stylish in a black off-shoulder dress.
Among the men, Leonardo DiCaprio, Eddie Redmayne and singer Sam Smith stood out, looking dapper in black-and-white tuxedo.