Stars had fun all over the globe this week, whether starting their vacations or hanging with their friends, and they shared it all on Twitter. Sofia Vergara broke out her bikini in Mexico, and Heidi Klum gave a glimpse of James Bond Island. Jason Segel and Kermit the Frog geared up for a friendly game of tennis, while Justin Bieber, Jay-Z, Aziz Ansari and Kid Cudi palled around — click through to see all the pics, and don't forget to follow PopSugar on Twitter for exciting news and photos!

A casual Miranda Kerr stuck close to Orlando Bloom, who carried the couple's son, Flynn, at the airport in Sydney yesterday. The family is Down Under to celebrate their first holiday season as a trio after welcoming Flynn in January. The new arrival landed Miranda on our list of favorite new celebrity moms of the year, which includes Pink and Rachel Zoe.

Miranda, Orlando, and Flynn have been on the go for the past 12 months with their most recent travels taking them to New Zealand, where Orlando filmed The Hobbit: An Unexpected Journey. We got a look at the film in the first trailer for The Hobbit this week. The movie's release is just one of many things the Kerr-Bloom crew has to look forward to in 2012, including Flynn's first birthday and the continued growth of Miranda's skin care line, Kora Organics.

Jessica Alba stopped by a Toys R Us in LA yesterday and filled her car with holiday surprises! Jess brought along her younger daughter, Haven, as helper to pick up a bright pink Barbie car for big sister Honor. It's Haven's first holiday season, and she went along with Jess, Cash, and Honor to pick out a family Christmas tree, but the 5-month-old skipped out on Honor's meet-and-greet with Santa. Jessica is heading into 2012 with a new business venture as the founder of The Honest Company, a retailer of affordable and non-toxic products for children, babies, and families.

Mark Wahlberg and Rhea Durham took their kids to a Beverly Hills park yesterday afternoon. They lounged on a blanket in the grass with Ella, Michael, Brendan, and Grace, and the couple even shared a sweet kiss while their little ones were off playing. It was the second fun outing for the family this week after they also visited Santa Claus at The Grove on Tuesday. Their festive photo op was just one of many adorable celebrity holiday moments this season including the Jolie-Pitts toy store stop and Justin Bieber's White House visit. Mark, Rhea, and their four kids are enjoying the Winter break before Mark gets back to work in the new year, when he'll be promoting Contraband ahead of its mid-January release.