The Academy Awards are being presented in person this month and they will feature plenty of superstars – with an emphasis on the diversity of former winners and nominees – including Brad Pitt, Halle Berry, Marlee Matlin and Bong Joon-ho.

The April 25 ceremony, to be primarily held at Union Station in downtown Los Angeles, comes as California accelerates its reopening after a year of COVID-19 closures, buoyed by a vast vaccination rollout, and will follow a glamorous "awards-show-as-a-movie" theme, the Academy said.

In a statement announcing the Oscars' "truly stellar cast of stars," the producers warned, "There's so much wattage here, sunglasses may be required."

Along with Berry, Pitt and Matlin, presenters will include last year's big acting winners Joaquin Phoenix, Renee Zellweger and Laura Dern – and of course, South Korea's Bong who won the best director and best picture with "Parasite."

Angela Bassett, Reece Witherspoon and Bryan Cranston will also appear, among others, marking the first time Tinseltown's biggest names will gather on the red carpet since COVID-19's arrival prompted the nation's first statewide stay-at-home order in March 2020.

The 93rd Academy Awards, delayed by two months due to coronavirus restrictions that allowed a year and a half's worth of movies to be considered, are being broadcast from Union Station and the Oscars' traditional Hollywood base at the Dolby Theatre, where some live musical performances are expected to take place.

Venues in Britain and France will also be set up for international nominees unable to travel to Los Angeles.

Recent awards shows, including the Screen Actors Guild (SAG) awards and February's Golden Globes, have been slammed for their heavy use of remote calling for nominees, particularly after Daniel Kaluuya briefly lost audio as he accepted his Globe for best-supporting actor.

Oscars producers have spoken of their desire for a ceremony that "will look like a movie, not a television show," promising a spectacular introduction and planning to film the proceedings in high-resolution, widescreen format.

Nominees have been urged to dress to the nines, with a warning from organizers that "formal is totally cool if you want to go there, but casual is really not."

"Contagion" director Steven Soderbergh is among the pandemic-delayed show's producers.