It’s all smooth sailing for these glamorous royals

Kelly’s stunning granddaughters are soaking up the sun on a private yacht in France.

Camille Gottlieb and Pauline Ducruet — who are the daughters of Princess Stéphanie of Monaco 

Gottlieb, 24, cozied up to her half-sister Ducruet, 28,

It appears the pair went famous mom, 57, who is currently 14th in line to the Monegasque throne

There was also no sign of their older brother Louis Ducruet, 29.

Gottlieb bares a striking resemblance to her “To Catch a Thief” star grandmother