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CHANGE OF A DRESS
Rihanna goes metallic in a shiny dress and gold jewelry in Santa Monica, California, on Sunday.
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Smile and say 'Sunday'! Jessica Chastain is a happy camper while out in Brentwood, California.
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Jennifer Lopez reunites with on-screen Maid in Manhattan son Tyler Posey – who happens to be wearing way less clothes than mom! – at Sunday's Teen Choice Awards in L.A.
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IF THE CROWN FITS …
Also at Sunday's Teen Choice Awards in L.A.: Modern Family's Nolan Gould, who tries on a royally awesome accessory backstage with actress Joey King.
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Jason Derulo gets some sweet support from ladylove Jordin Sparks at the Teen Choice Awards, where he took the stage to perform a medley of his hits "Wiggle" and "Talk Dirty."
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Idris Elba shows off his sizable gun while filming Friday on the London set of his new drama, A Hundred Streets.
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Bed, Baby and Beyond? Mom-to-be Rachel Bilson picks up a few pregnancy essentials with boyfriend Hayden Christensen in L.A. on Sunday.
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He's the host having the most … fun! Antonio Banderas dresses (and dances) the part for the Starlite Gala fashion show in Marbella, Spain, on Sunday.
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THINGS THAT GO BUMP
Mom's on the move! Mila Kunis's lunch in L.A. on Sunday calls for a basic black sheath.
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An armed and fabulous Katy Perry belts out her hits during her concert in Grand Rapids, Michigan, on Sunday.
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Anna Faris heads out in Brentwood, California, sans her Star-Lord on Sunday.
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Katie Holmes is ready to roll after landing via helicopter in East Hampton, New York, on Sunday.
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TWICE AS NICE
She's still the one that we want – but make that two! Olivia Newton-John gives us a double dose of summer lovin' at Saturday's unveiling of her new Madame Tussauds wax figure in Las Vegas.
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HE'S SO FLY
Headphones, sunglasses, some new purchases? Channing Tatum keeps his essentials close by as he makes his way through Los Angeles International Airport on Saturday.
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It's a fashionable affair for Lucy Hale, who dresses the part for the Saturday launch of her new Hollister collection in Los Angeles.
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ONE FOR THE BOOKS
Alec Baldwin finds himself in good company with wife Hilaria and chef Giada De Laurentiis at Saturday's Authors Night at the East Hampton Library in New York. (Baldwin is a founding co-chair and Laurentiis is an honorary co-chair of the organization.)
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Jared Leto rules the stage – in flowing, kingly garb, no less – while performing with his band Thirty Seconds to Mars in West Palm Beach, Florida, on Friday.
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Sparks from Parks
Goofy Parks and Recreation pals Chris Pratt and Aubrey Plaza have a red-carpet reunion on Friday at a screening of Life After Beth at L.A.'s Ace Hotel.
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On the Ball
The guy's got bounce! Josh Hutcherson shows off his baller moves at the third annual Josh Hutcherson Celebrity Basketball Game, held Friday at Nokia Plaza in L.A.
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What a lucky lady! Connie Britton cuddles up to country cutie Luke Bryan during a visit to Good Morning America in New York's Central Park on Friday.
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Surfs up! Matt Damon catches a wave while on vacation in Costa Rica on Friday.
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RAY OF SUNSHINE
Reese Witherspoon sports the perfect summer look on her way into a nail salon on Friday in Brentwood, California.
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IN THE BUFF
Mark Wahlberg shows off his really toned arms while filming a scene for Ted 2 on Friday in Boston.
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Naomi Watts stays in the shade(s) en route to a workout Friday in Brentwood, California.
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Kate Mara is anything but mellow in yellow on Friday, showing off her bright summer ensemble while shopping in New York City.