Fellow contestant Asghari, who was listed as an actor in the promotion for the upcoming series, split with pop star Spears in 2023, with the couple citing “irreconcilable differences” in their court filings.
They got married at a star-studded ceremony at the US singer’s home in Los Angeles in June 2022 after meeting on the set of the Slumber Party music video in 2016.
Their wedding was attended by high-profile celebrities including Madonna, Selena Gomez, Drew Barrymore and Paris Hilton.
Also taking part in the third series are RuPaul’s Drag Race winner Bob the Drag Queen, The Biggest Loser trainer Bob Harper, Summer House star Ciara Miller and WWE wrestler Nikki Garcia.
Other contestants include Zac Efron’s younger brother Dylan, Survivor competitors Carolyn Wiger, Jeremy Collins, Rob Mariano and Tony Vlachos, Real Housewives franchise stars Dorinda Medley, Robyn Dixon, Dolores Catania and Chanel Ayan, former The Bachelor spin-off stars Gabby Windey and Wells Adams and Big Brother US version stars Britney Haynes and Danielle Reyes.
Cumming revealed the cast in a video on YouTube, where he was seated in front of a fire and wearing a yellow tartan suit.
He said: “This is sure to be the most treacherous season yet.”