Kaley Cuoco, Ryan Sweeting, Kate Beckinsale , and other celebrities flocked to Joel Silver's annual star-filled Memorial Day party in Malibu, CA, on Monday. Newlyweds Kaley and Ryan couldn't keep their hands off each other and had a serious snuggle session on the sand. Meanwhile, Kate, Gwen Stefani , and January Jones  kept a close eye on their little ones, with January even playing around with a group of kids with a squirt gun. We'd never see Betty Draper do that! Keep scrolling to see more stars at Joel's bash, and check out how other stars celebrated Memorial Day  (hint: BBQ, shirtlessness, and babies were involved).
Diane Kruger  and Joshua Jackson  arrived together.
Kaley Cuoco and Ryan Sweeting showed PDA on the beach.
Gwen Stefani  chatted with a valet.
Meanwhile, Gavin Rossdale  was on dad duty.
Kate Beckinsale  looked white hot in a jumper.
Rande Gerber and Cindy Crawford  arrived with margaritas and bottles of Rande's Casamigos tequila in hand.
January Jones  played with a squirt gun.
Rita Wilson wore a black ensemble.
Tobey Maguire  kept it casual. Keep scrolling for more pictures!