Festival season’s crown jewel, the Festival de Cannes, is here, and the stars are already turning heads with their fashion.

Actress Eva, 50, underwent an outfit change from the red carpet as she arrived to the dinner in a black and silver striped midi dress.

Halle Berry made a last-minute outfit swap ahead of the Cannes Film Festival—where she is serving as a competition juror—as the festival instated a new rule banning “voluminous outfits." ...