The early winners at the 86th Oscars were Jared Leto while Disney's 3D animation drama "Frozen" and "Gravity" won the Oscar trophies in animation and visual effects categories.
Leto, a strong favourite, won the first trophy of the night for his role of a transgender AIDS patient in "Dallas Buyers Club".
"Frozen" defeated "The Croods", "Despicable Me 2", "Ernest & Celestine" and "The Wind Rises" to score in the animated category.
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"Dallas Buyers Club" took home the best make-up and hairstyling trophy.
Best animated short film Oscar went to "Mr Hublot" while "Helium" was named best live action short film.
"20 Feet from Stardom" was named the best documentary feature and best documentary short went to "The Lady in Number 6: Music Saved My Life".