SELF-PORTRAITSBarack Obama, Lady Gaga & More Celebrity Twitter Pictures (Photos)Christy Khoshaba07.29.12SELF-PORTRAITSBarack Obama, Lady Gaga & More Celebrity Twitter Pictures (Photos)Ricky Gervais falls in love with a pooch, Diddy goes way up in the air, and Miley Cyrus eyes vintage Playboys. Plus, more of the stars’ Twitter photos from this week.Christy Khoshaba07.29.12 8:45 AM ETRicky Gervais falls in love with a pooch, Diddy goes way up in the air, and Miley Cyrus eyes vintage Playboys. Plus, more of the stars’ Twitter photos from this week. WhoSay.com / Miley CyrusMiley CyrusCyrus caught up with a few vintage Playboys and made sure to give a shoutout to a country star. She tweeted, “@GREY__NAT catching up on some light reading. #myfriendsarecoolerthanyours ps @Dolly_Parton you look sexy! still do!” Parton once made an appearance on Cyrus’s Hannah Montana Disney series. WhoSay.com / DiddyP. DiddySean John Combs a.k.a. Puff Daddy/P.Diddy/Diddy was getting his entrepreneurial side on while up in the sky. He tweeted, “Helicopter Office Grind.. Say it loud ‘I’m black and I’m proud... and I can fly’!!” WhoSay.com / Victoria BeckhamVictoria Beckham The former Spice Girl looked nothing but posh as she was getting a touchup in a private jet. The mother of four tweeted, “About to land in Dublin, see you soon! X VB.” Here, she was getting ready for the launch of her clothing line at Irish department store Brown Thomas. WhoSay.com / Lady GagaLady Gaga“I missed Hollywood,” Gaga tweeted with a long blond hairdo, Amy Winehouse-trimmed eyes, and quite the pout. If Gaga missed Tinseltown, then she surely missed her little monsters there, too. Her tweet continued, “I mean, it’s not my favorite place in the world. But it’s nice.” This tweet came after a visit to the Big Apple. WhoSay.com / Barack ObamaBarack ObamaAmid campaign visuals and conference photos, the president posted a photo of him and his youngest daughter, Sasha. The two sat on the grass and epitomized “Summer” as Mr. Obama tweeted. WhoSay.com / Kate WalshKate WalshWhile she traveled to Mexico, Walsh snapped a photo of her pre-snorkeling. She teased her fans by tweeting,“Preparing for Private Practice Season 6!,” the medical drama series she stars in. WhoSay.com / Justin BieberJustin BieberOMG! Some lucky girl had a super backstage pass. She hugged Justin Bieber... and then he tweeted it. “Flew in a new friend :)” the Biebs wrote. WhoSay.com / Tyra BanksTyra BanksThe supermodel got into character with fellow model Claudia Mason while traveling. Banks tweeted, “My road(trip)dog, Claudia Mason—fellow mannequin. Isn’t her smile gorg?” The pair have worked together on Banks’s America’s Next Top Model. WhoSay.com / JWowwJWowwRise and shine, sweetie. Jersey Shore star Jwoww was all covered up for her appearance on FOX’s Good Day L.A. morning program. She tweeted “Good day la!” and snapped a photo with co-host Steve Edwards. WhoSay.com / Ricky GervaisRicky GervaisAttention: Leave the British comedian alone with this dog named Barney. Gervais was on set filming a worldwide campaign for the World Society for the Protection of Animals. He tweeted, “If I had this dog I would never get any work done and I wouldn’t care.” But his fans sure would. WhoSay.com / Nina DobrevNina DobrevThe Vampire Diaries star had some fun on set when she kissed a zebra. She tweeted, “Meet Elena’s new love interest... The youngest Salvatore brother.” Now that would be an interesting plot. WhoSay.com / Ashley JuddAshley JuddDaily Beast contributor Ashley Judd attended the Women for Obama luncheon. She tweeted, “Another veteran for Obama, the beautiful Mr Denny. He gave me hope & a 10 Commandments book mark.” She was proud to hold that bookmark along with a furry little dog. Paul McCartneyIn case you missed it, Paul McCartney closed the 2012 Olympic Opening Ceremony with a sing-a-long version of Hey Jude. Looks like his folks may have tweeted, "Paul at last night's Olympics Opening Ceremony." Sure it's a boring tweet, but a lively, fun photo.