Looking lovely at a Cannes Film Festival party, Nicky Hilton and her sister Paris Hilton were spotted glamming it up at the Albion Hotel in France this evening (May 21).

The brunette beauty walked hand-in-hand with her new British beau dressed in a sexy black skirt along with strappy heels while the nightlife queen hung out with a friend sporting a flowing white and pink gown.

Celebrating all of the ladies that give so much of themselves to provide the best lives that they possibly can for their children, Hollywood's stars join all those around the world in expressing the extreme gratitude to all of the moms out there on this Mother's Day holiday.

Keeping things short and sweet, Justin Bieber took to Twitter this morning while posting a heartfelt message reading, "HAPPY MOTHER'S DAY!"

After spending the afternoon at various pool parties and cookouts, the stars at Coachella slowly but surely converged at the Empire Polo Club concert grounds in Indio, California on Saturday (April 14).