cannes france the paperboy Matthew McConaughey nicole kidman john cusack Zac Efron cannes france the paperboy Matthew McConaughey nicole kidman john cusack Zac Efron Spread Pictures

Zac Efron, Nicole Kidman and Matthew McConaughey are one sexy bunch!

The three stars hit up the Cannes Film Festival to promote their upcoming flick The Paperboy.

The movie is based on Pete Dexter's 1995 novel about a reporter played by McConaughey who investigates the conviction of a sleazy inmate played by John Cusack.

In the Lee Daniels-directed flick, there's a "golden shower" scene, but it's reportedly non-sexual. Efron's character is stung by a jellyfish and needs relief. Yep, it's Nicole's character who is going with the flow ... if you know what we mean.

Should be interesting!