Channing Tatum and his pregnant wife, Jenna Dewan, took a walk along the beach in St. Barts today. Jenna covered up her growing stomach — and her bikini — with a caftan. She finished the look with a wide-brimmed hat. Channing, meanwhile, kept his shirt on, much to our dismay. Their getaway comes at the end of a major 2012. Channing's career is hotter than ever, and he capped off a year of adulation, thanks largely to the success of Magic Mike, with the honor of being named People's Sexiest Man Alive. Where does Magic Mike's success rank on your list of the biggest headlines of 2012? Confirmation that Jenna Dewan is pregnant with their first child was really the most special part of a banner 12 months for her and Channing.

Sienna Miller turns 31 today! It's been a whirlwind 12 months for Sienna. In addition to debuting an engagement ring from fiancé Tom Sturridge, they also welcomed their first child, Marlowe, over the Summer. Sienna was on the road showing off her HBO project, The Girl, which later earned her an early birthday present — a Golden Globe nomination.

To celebrate her milestone year, we're taking a look back at some of her most adorable, and PDA-filled, moments with Tom. Click through to see all of their cutest pictures!

Jennifer Aniston and Justin Theroux lounged under the Mexican sun yesterday in Cabo. Jennifer was engrossed in a novel, while Justin sat close by, thumbing through a script. The pair took a short break from their tanning session to eat tacos and fruit. They also shared an adorable hug and reminded us why they're among the sexiest celebrity couples of 2012. Later on, they had some company! Justin and Jennifer welcomed Emily Blunt, John Krasinski, Jimmy Kimmel, and Molly McNearney to their suite. Emily and John cuddled on a lounge chair, while Jimmy and his wife, Molly, cracked jokes with Jen and Justin.

Jen and Justin arrived in Cabo on Sunday and have since taken to hanging poolside at their tropical resort. The New Year is just around the corner, though still no word on when Jen and Justin plan on tying the knot. Jen and Justin's engagement landed a hot spot on our list of the most shocking moments of 2012, and we can't wait to see what the pair surprises us with in the New Year.

It's been a very merry holiday season so far for Nick Cannon and Mariah Carrey, who touched down in Australia today. The couple stepped out of their private jet with twins Roc and Roe fresh off a lengthy flight from Aspen, CO. The Carey-Cannons are embarking on the second half of their family vacation after spending a week enjoying the snowy scenery in Colorado. Nick and Mariah shared a few adorable photos from their Christmas festivities, including Nick dressed up as Santa. This portion of their vacation will likely require fewer jackets, scarves, and sweaters for Nick, Mariah and the kids. Upon their arrival in Oz, the foursome were spotted boarding a beautiful luxury yacht anchored just off the Great Barrier Reef in Queensland.

Tom Brady and Gisele Bündchen juggled a schedule full of family, fashion, and football this year. Tom's New England Patriots made it to the Super Bowl, Gisele modeled for Vogue covers and launched a line of lingerie, and to cap things off, they welcomed baby Vivian Lake earlier this month! The Brady-Bundchens also took time out for vacations and some downtime close to their Boston homebase with sons Benjamin and Jack.

Click through to revisit the Brady-Bundchen's biggest moments of the year, and don't miss out on all our Best of 2012 coverage across the PopSugar Network!

Source: X17 Online, Splash News Online, Facebook user Gisele Bündchen

Anne Hathaway and Adam Shulman stepped out in NYC today, despite the frigid Winter temperatures. Anne accessorized her outfit in a warm furry hat and cute mittens while Adam opted for leather gloves and a traditional beanie. The pair are back at home spending time with their chocolate Lab, Esmeralda, after Anne's whirlwind international press tour. Her latest film, Les Misérables, opened strong at the box office, earning $18.1 million on Christmas Day and taking in close to $40 million over the holiday break. Not only is the musical boding well in theaters, it's also proving to be a true Oscar contender. So far the movie has picked up multiple award season nominations, including Golden Globe and SAG nods for Anne and her talented costar Hugh Jackman. The Academy Award nominees will be announced on Jan. 10, but before then, Anne could take home a People's Choice Award on Jan. 9, as she's nominated in two categories for her role in The Dark Knight Rises.