Margot Robbie and the Weeknd will star on the debut episode of 'Saturday Night Live' season 43

Margot Robbie is arguably one of Hollywood’s hottest actresses right now. And as she rides on the momentum from her stint as Harley Quinn in last month’s “Suicide Squad,” the Australian native has just been announced as the first host of “Saturday Night Live” season 43.

The episode, which will air on Oct. 1 at 11:30 p.m. on US network NBC, will be Margot’s first go at hosting. She will be joined by musical guest The Weeknd, who will be on the show for the second time. He first appeared as a musical guest on Amy Schumer’s episode last year.

While Margot is still riding on the success of both “Suicide Squad” and “The Legend Of Tarzan,” The Weeknd is gearing up to release his upcoming album, “Starboy.”

“Saturday Night Live” season 43 is sure to be different, as the show experienced some cast and writing staff changes. For instance, Jay Pharoah and Taran Killam have both walked out in order to pursue their Showtime shows. Jon Rudnitsky has also left the show.

Meanwhile, viewers will see more of Leslie Jones and Pete Davidson, as both comedians have been promoted to primary cast members. Audiences will also learn about Mikey Day, Alex Moffat and Melissa Villaseñor, who are making their debut as featured player in the premiere episode.

Margot will not only experience a shortage of hilarious co-stars, she is also in good company behind the scenes.

The writing staff of “Saturday Night Live” also received a major facelift over the last few weeks. Sarah Schneider and Chris Kelly were promoted to co-head writers. In addition to the regular staff, several others have been added as well, including Nick Kocher and Brian McElhaney (also known as BriTANick), Zack Bornstein from “Jimmy Kimmel Live,” UCB’s Joanna Bradley, Anna Drezen and Kristen Bartlett, as well as comedian Julio Torres.