Click through the red carpet gallery above to see all the looks as they happen.
Honouring the most spectacular performances on the silver screen since 1929, the Oscars are one of the most star-studded and prestigious events on the film industry's calendar.
Tonight, the world's most glamorous stars will swarm the Dolby Theatre at Ovation Hollywood in Los Angeles to watch the hotly anticipated 98th Academy Awards.
Comedian, podcaster, and TV presenter Conan O'Brien has once again been tapped to host, making this his second consecutive Oscars after last year's ceremony drew almost 20 million viewers.
He will be joined on stage by a number of celebrity presenters, including Gwyneth Paltrow, Robert Downey Jr, Anne Hathaway, Will Arnett, Priyanka Chopra Jonas, and Irishman Paul Mescal.
Ahead of the ceremony, we'll be covering the red carpet as it happens, bringing you details on each and every dazzling look. Simply click through the red carpet gallery above to see the celebrity style as it happens.
You can watch the Oscars live on RTÉ One and RTÉ Player from 12am, with red carpet coverage starting at 11pm on Sunday, March 15.
