Margaret Qualley made her first red carpet appearance since her reported split from music producer Jack Antonoff, attending the premiere of "The Dog Stars" in London on Thursday. The actress, 31, arrived barefoot and without her wedding ring, opting for a pair of Chanel barefoot sandals from the brand's 2027 collection.

Qualley, who stars as Cima in the film, wore a plunging black tasselled gown with a V-neckline. She was joined at the event by co-star Jacob Elordi, who plays the film's lead Hig. Elordi, 29, wore a navy pinstriped suit.

The split from Antonoff, 42, was confirmed in July. A representative stated that there was no infidelity or trust issues involved in the end of their nearly three-year marriage. Qualley has since changed her Instagram handle back to her legal name, Sarah Margaret Qualley, and deleted photos from their wedding day.

"The Dog Stars," a sci-fi and action movie with a reported $110 million budget, is set to be released in U.S. and U.K. theaters on August 28. The film's synopsis describes a post-apocalyptic world where a virus has decimated humanity, leaving survivors to contend with scavengers known as Reapers. The protagonist, Hig, survives the initial outbreak but loses his wife.

Other attendees at the premiere included Kimberley Garner, Una Healy, Lottie Moss, Myleene Klass, Brian May, Tasha Ghouri, Nadine Leopold, Guy Pearce, and Benedict Wong.