What? Kelly swapped her recent Cannes show-stopper - the bejewelled gold corset dress - for a far more sophisticated, floor-sweeping number with peplum detailing. Paris continued to dazzle in a leg-flashing, strapless design, paired with statement jewels.
Where? The annual de Grisogono party at the Hotel Du Cap, near Cannes, 23 May
Bonus info: Paris' sister Nicky was also there. She bucked the glam gown trend for a leather LBD.
Let us know how you rate the ladies' party looks and see more from the Cannes red carpet below: