The 78th Cannes Film Festival is well underway … and, big stars are bringing their best to the red carpet — including a couple of Hollywood heartthrobs.

Jennifer Lawrence is back on the world stage after taking some time to start her family with husband Cooke Maroney — looking fashionable in a strapless white dress with a seashell-like bust.

She posed with Robert Pattinson — dressed in a flashy black tux … drawing attention for their new flick, “Die, My Love.”

The two posed with their costar, LaKeith Stanfield, too … exciting onlookers with one of their first glimpses of the powerhouse cast.

Director Quentin Tarantino made an appearance in the French city Saturday … snuggling up to his wife, Daniella, on the red carpet — arms wrapped around her waist.

He doesn’t have a movie premiering at the festival … but, the dude’s a well-known cinephile — so, not surprising to see him here.

And, Victoria’s Secret Angel Barbara Palvin looked angelic on the carpet … despite leaving her wings at home.

Among the other bold-faced names out and about Saturday … Mariska Hargitay, Sissy Spacek, Rosie Huntington-Whiteley, Zoey Deutch, Alexa Chung and more.