1 of 25
Ashlee Simpson keeps in step with boyfriend Evan Ross on a day out in West Hollywood on Sunday.
2 of 25
Robert Downey Jr. happily hits the beach Sunday while holidaying with wife Susan and 22-month-old son Exton (not pictured) in St. Barts.
3 of 25
STICK TO THE SCRIPT
Does Josh Duhamel have a new movie in the works? The actor gets going in L.A. on Sunday with reading material in hand.
4 of 25
5 of 25
WALK THIS WAY
Heidi Klum pops in coordinated turquoise New Balance workout gear (from her own line) on a walk with boyfriend Martin Kirsten and their dog in Santa Monica, Calif., on Saturday.
6 of 25
New Girl's Max Greenfield holds tight to the leading lady of his life – daughter Lily – while soaking up the sun with family in Hawaii on Sunday.
7 of 25
OUT & ABOUT
Jonah Hill, who's receiving rave reviews for his role in The Wolf of Wall Street, enjoys a sunny afternoon in L.A. on Sunday with a female friend in tow.
8 of 25
ROW YOUR BOAT
Coming through! Don Cheadle takes to the water during a family vacation in Hawaii on Sunday.
9 of 25
It's only been about a week since she welcomed son Kaius, but Rachel Zoe is already showing off her slender post-baby body Sunday in Bel-Air, Calif., with her first son Skyler, 2½, by her side.
10 of 25
THE PURPLE ONE
Looks like he's gonna party like it's 1999! Prince brings down the house during what was surely a legendary performance at the Mohegan Sun Arena in Montville, Conn., on Sunday night.
11 of 25
WET & WILD
Getting ready to hang ten? Sean Penn gets sandy on his way to catch a wave on a sunny Sunday in Hawaii.
12 of 25
13 of 25
GOOD TO GO
Naya Rivera and fiancé Big Sean stay on the move – and close to each other – as they make their way through L.A. on Saturday.
14 of 25
BACK TO WORK
It's no sweat for Gisele Bündchen, who clocks in a post-holiday workout in Boston on Saturday.
15 of 25
Rihanna makes waves in Barbados as she cools off in style on Saturday.
16 of 25
17 of 25
18 of 25
19 of 25
20 of 25
What's not to smile about when you're at the beach? Isla Fisher gathers some water to help build a sand castle on Friday while on a family trip in Hawaii with husband Sacha Baron Cohen and daughters Olive, 5, and Elula, 3.
21 of 25
22 of 25
CUTE AS A BUNNY
Like, mother, like daughter! Jessica Alba arrives at Los Angeles International Airport with her equally beautiful little one Haven, 2, bundled in her arms on Friday.
23 of 25
24 of 25
25 of 25
Alec Baldwin does the stroller pushing while wife Hilaria smooches the forehead of their daughter Carmen, 4 months, on a coffee run in Amagansett, New York, on Thursday.
Elle & Jude Run from the Rain, Plus Ben Affleck, The Rock & More
How Jordan Fisher Is Powering Through Multiple Injuries on DWTS: 'Adrenaline Is a Big Factor'