It was all about fun in the sun for our favorite social-media-savvy stars this week. Lea Michele , Rita Ora, and Bar Refaeli  were just some of the bikini-clad babes to share their summery snaps, and Alessandra Ambrosio palled around with Brooke Burke and a scaly friend. Sofia Vergara celebrated her birthday with a giant cake while Miranda Kerr  spend time at the park with her little man Flynn, and Nicole Richie  busted out the Cabbage Patch during an Extra segment with Mario Lopez. Also in the mix? Jay-Z's art-gallery rap-athon in NYC and Ian Somerhalder 's steamy photo shoot in Italy.
Click through to see the rest of this week's cutest celebrity candids, and be sure to follow POPSUGAR on Instagram , Facebook , and Twitter !
Alessandra Ambrosio sported short shorts and a one-piece suit on the beach for Fourth of July festivities.
Rihanna  struck her signature bad-ass pose while getting off her private jet upon landing in Poland.
Sofia Vergara celebrated her birthday with a giant cake.
Alessandra Ambrosio and Brooke Burke spent time with a scaly pal on the Fourth of July.
Lea Michele  shared this sexy bikini shot during her "last day in paradise."
Candice Swanepoel wore all white for an appearance on a Seattle talk show.
Miranda Kerr  spent some time with her son, Flynn Bloom, and shared this adorable snap while playing on a slide.
Brad Goreski snapped a selfie while lounging on the beach.
Vanessa Hudgens  showed off her (slightly) shorter locks.
Doutzen Kroes showed off her sleek new Tom Ford  shades.
Gisele Bündchen bid good morning to "Mother Earth."
Lily Aldridge snuggled with a furry friend.
Nicole Richie  popped up on the set of E! News.
Julianne Hough got some serious air while jumping off a boat.
Vanessa Hudgens  blew a kiss to the camera.
Jessica Alba  got prepped for a big book signing in LA.
Rita Ora logged bikini time while hanging with friends on a boat.
Miranda Kerr  shared a behind-the-scenes snap while on set with her dog, Frankie, for a magazine shoot.
Ciara showed off a daring ensemble.
Emma Roberts dressed up in sequins for a Persol  party.
Miranda Kerr  shared this pretty pic while hanging at home.
Lea Michele  shared this cute bikini photo from her recent vacation in Mexico.
Bar Refaeli  wore a white bikini while basking in the sunshine.
Alessandra Ambrosio snapped a selfie while in the car.
Mena Suvari sported an N.W.A. t-shirt for a concert with friends.
Jay-Z took a water break while performing his song "Picasso Baby" at the Pace Gallery in NYC.
Cat Deeley sported a sexy Etro  dress.
Bar Refaeli  paused for a mirror selfie on her way to an event.
Khloé Kardashian channeled a '40s pinup girl for a photo shoot.
Nicole Richie  sported a pair of striped wide-leg pants while shooting a segment for her AOL show, Candidly Nicole.
Ke$ha couldn't resist sharing a selfie before going for a run.
Kourtney Kardashian and Scott Disick snapped a sweet photo while hanging out in Vegas.
Pregnant Jaime King snapped a photo of her full bed.
Ian Somerhalder  and Ana Beatriz Barros stayed close after wrapping production on their recent Azzaro  shoot.
Rachel Roy  shared this bikini-clad photo with her followers.
Candice Swanepoel struck a cute pose for the camera while promoting the Victoria's Secret Swim collection in Seattle.
Emmy Rossum wore a gorgeous Carolina Herrera  gown for an event in NYC.
John Stamos took a photo while getting his hair done on the set of Necessary Roughness.
Lance Bass posed with an adorable pup.
Nicole Richie  and Mario Lopez did the Cabbage Patch during a segment on Extra.