Robert Pattinson toted his Washburn guitar through JFK Airport on Saturday. He has been spending some pre-Christmas time in the Big Apple and Rob was spotted hanging out at the Waverly Inn with friends last week. To celebrate the end of 2012, we took a look back at Rob and Kristen's roller-coaster 2012, which included new professional landmarks for the actors as well as the drama that rocked their fan bases over the Summer. Rob has more than one headline competing in our bracket, but right now his reconciliation with Kristen is trailing President Obama's reelection and Kate Middleton's pregnancy. Play now if you think Rob and Kristen deserve the biggest celebrity story of 2012 crown!

Ben Affleck held hands with daughters Violet and Seraphina after doing some shopping at Williams-Sonoma in LA on Saturday. Ben is closing out a landmark 2012, which saw him earning more critical acclaim than ever as a director for Argo. Some fans are so impressed with his work both on screen and with his work in DC that they're cheering for him to take on a real role in politics. Ben deflected questions about running for senate if John Kerry becomes secretary of state, but he wouldn't be the first actor to take on a public office. For now, though, he's focused on spending the holidays with his family at home in California. It will be Samuel Affleck's first Christmas, and it's sure to be an adorable one for your favorite celebrity family of 2012.

Orlando Bloom took his son Flynn out shopping in Beverly Hills on Friday. After spending much of November and December in NYC with mom Miranda Kerr, Flynn is now reunited with dad Orlando for the holidays. Orlando has been in South Africa filming Zulu, but he was able to take a break to watch Miranda walk in the annual Victoria's Secret fashion show. Supermodel Miranda is currently a runner-up in our best bikini body of 2012 poll, and the whole trio is among our favorite celebrity families once again. Flynn gets to enjoy a very celebratory few weeks of presents coming up — not only is it Christmas, but he turns 2 years old on Jan. 6.

Jennifer Lopez divided time between her current and past loves, Casper Smart and Marc Anthony, in Puerto Rico this weekend. Jennifer joined her ex-husband Marc to perform a duet of "No Me Ames" on stage on Friday evening. It was the second to last night of her Dance Again world tour, and the friendly former flames looked happy to reunite for a moment. Casper also took part in the show, as he has all tour long. Jennifer's heart now belongs to Casper, of course, and those two were back to cuddling to watch a charity celebrity football game on Saturday. Jennifer took a seat on Casper's knee when he wasn't showing off his skills with the pigskin. Jennifer's daughter, Emme, joined in on the fun and wore red to match J Lo and Casper's jerseys. Last night was the final show, and J Lo tweeted to her fans, "Thank you for the best 1st World Tour ever!"

Sienna Miller stopped by The Jonathan Ross Show on Friday to chat with the host and share a segment with chef Jamie Oliver. Sienna got hand-fed by Jamie and talked about her new movie, The Girl, which she filmed when she was pregnant with baby Marlowe. Sienna also shared a story about her godmother giving her a gift of Agent Provocateur underwear, without realizing it was even naughtier than she thought. Sienna joked, "There was this moment of kind of 'thank you so much.' And then I got pregnant, so there we go." The birth of Marlowe made 2012 a milestone year for Sienna, and to close it out, both she and fiancé Tom Sturridge have birthdays to celebrate. Tom turned 27 on Friday, and Sienna is 31 on Dec. 28.

This year brought more glamour and globe-trotting than ever for the Jolie-Pitt family. Brad Pitt and Angelina Jolie kicked off the year with head-turning red-carpet appearances, including her now-famous appearance at the Oscars, and capped things off with their exciting engagement.

Brad and Angelina's party of eight — which includes their children Maddox, Zahara, Pax, Shiloh, Knox, and Vivienne — traveled to Sarajevo, the Galapagos Islands, Amsterdam, and more. Amid all the travel, Brad and Angelina kept up their busy film careers, working on projects like Maleficent, World War Z, and The Counselor. A busy schedule didn't stop Angelina from tending to her humanitarian work, or Brad from hitting the Cannes Film Festival.

Click through to see highlights from Brad and Angelina's busy 2012. Also check out the rest of our Best of 2012 coverage across the network!

This week in PopSugarTV, we geared up for the holiday season. Bella showed us an easy and festive nail art project, while Fab gave us tips on styling tuxedo pants for Winter parties. Yum also got in on the action by sharing the secrets to a perfect lattice pie crust and a recipe for a Champagne cocktail to toast with when the clock strikes midnight on New Year's Eve. After all that holiday indulging, you might be looking for some tricks to burn calories, and Fit has several. They brought us a treadmill strength-training workout and a 10-minute Pilates series.

Click through for all the videos above, and check out PopSugarTV for even more!

Over the past year, many of our favorite celebrities welcomed little ones into the world. Some became parents for the first time, and others expanded their growing families. Jay-Z and Beyoncé Knowles got things started when she gave birth to baby Blue in January, while Reese Witherspoon became a new mom again in September after she had Tennessee James. Plenty more A-listers introduced their bundles of joy this year, so be sure to click through to see all of the celebrity babies of 2012!

Photos courtesy FameFlynet, Getty, and Tumblr user IAmBeyoncé