Nominee Alicia Vikander has opted for a pale yellow embellished Louis Vuitton gown for her arrival on the red carpet at the 88th Academy Awards.
The Swedish star is nominated for best supporting actress for her role as artist Gerda Wegender in The Danish Girl.
Sam Smith, who is nominated for best original song for Writing's On The Wall from Spectre, arrived with his songwriting partner Jimmy Napes and sipped English tea with E! host Ryan Seacrest as he chatted on the red carpet.
Comedian Mindy Kaling, who voiced Disgust in Inside Out, which is nominated for best animated movie, opted for a strapless Elizabeth Kennedy black gown with a blue train.
Room star Jacob Tremblay, nine, arrived in a dark tuxedo after sharing a photo on Instagram of him lounging on the back seat of a car on his way to the ceremony.
Asked about his perspective on the Oscars, he said: "I just see lots of legs."
The boy has been a fixture on the red carpet at awards ceremonies this year after his performance in the film, which is nominated for best picture.
His co-star Brie Larson, who played his mother, is widely tipped to take home the best actress gong while Lenny Abrahamson will compete for best director.
Actress Olivia Wilde, who arrived with her husband Jason Sudeikis, opted for a cream gown with a plunging neckline and a diamond choker.
Oscar winner Whoopi Goldberg, who took home a statue in 1991, chose a black off-the-shoulder gown, while Star Wars actress Daisy Ridley, who is presenting at the ceremony, picked a silver embellished dress.