Zoe Saldana stepped out in a romantic Alexis Mabille design tonight at the Oscars. Intricate floral details framed the top of the dress's lilac bodice, while a bold ombré flowed along the hem. It's the latest dramatic look from Zoe — what do you think? Be sure to vote in all of our Oscars fashion and beauty polls throughout the night! Zoe doesn't have any films in contention for an honor this year, but she was last on the big screen starring in The Words with her costar — and ex — best actor nominee Bradley Cooper.

Jennifer Aniston is 44 today! She and her husband-to-be Justin Theroux got engaged in August 2012, and have spent the last six months prepping for their big day. The last few years in general have been exciting for the duo, who met while filming Wanderlust in 2010. In honor of her milestone birthday, we're taking a look at their most adorable moments together.

Happy birthday to Jen — click through to see their sweetest moments!

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Nina Dobrev turns 24 today, and we're celebrating the Vampire Diaries star's big day with a look back at her sexy and sassy photos over the years. She's become a red carpet staple at award shows and is often spotted on the arm of her costar and real-life boyfriend, Ian Somerhalder. Click through to see her hot snaps, and happy birthday, Nina!

2012 was one heck of a year in Hollywood, the Big Apple, and beyond. We were on the red carpets bringing you the latest news and photos of your favorite stars, and now we're taking a look back at our top 100 photos from the past 12 months. We captured an adorable moment at the Oscars when Angelina Jolie couldn't find her handsome date, Brad Pitt; we were on hand for the premieres of The Avengers, Ted, Argo, The Amazing Spider-Man, Men in Black 3, and many, many more!

Reminisce with us, don't forget to follow PopSugar on Instagram, and stay tuned for more fun and exciting snaps this year!

December is almost over, but don't worry; we're recapping the most memorable social snaps you may have missed. Jessica Simpson and Eric Johnson shared pictures from their Hawaiian vacation, while Judd Apatow ran into Tom Cruise backstage at Late Night With Jimmy Fallon. Miley Cyrus shared a Christmas kiss with one of her pups, and Rihanna got a hug from The Big Bang Theory's Jim Parsons. Join us as we reminisce over this month's greatest pics!

Click through to see our favorite photos, and don't forget to follow PopSugar on Instagram and Twitter for exciting news and photos.

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.

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.

Jennifer Lopez drew lots of attention from fellow shoppers during a midday stop near Rodeo Drive in Beverly Hills yesterday. The singer was joined by boyfriend Casper Smart and 4-year-old twins Max and Emme Anthony. The foursome are back from a recent trip to Puerto Rico, where J Lo performed alongside ex-husband Marc Anthony. In fact, J Lo may be back on the West Coast for an extended period after wrapping up her Dance Again world tour last week. Now that J Lo's on a break from music, it looks like she'll be returning her focus to acting in the upcoming year. Jen shares the big screen with her handsome costar Jason Statham in Parker, due out Jan. 25.

Simon Cowell was spotted in Barbados yesterday on one of his favorite modes of transportation — a jet ski! The X Factor judge hit the seas in a pair of wild board shorts and showed off his toned torso while navigating the waves alongside his former fiancée, Mezhgan Hussainy. Simon is currently in the midst of a three-week holiday and appears to be doing his best to unwind after closing out another tumultuous season of The X Factor.

Tate Stevens won the $5 million recording contract last week, beating out Britney Spears's 13-year-old hopeful, Carly Rose Sonenclar, and Simon's girl group, Fifth Harmony. The show may have wrapped, but new rumors are swirling that Britney will be fired from the show. There's been no comment from Spears or Simon at this point, though fellow judge L.A. Reid confirmed he won't be back for a third season.

Britney Spears enjoyed a casual afternoon in LA today with her boys Jason Trawick, Sean Preston, and Jayden James. The foursome grabbed lunch at Claim Jumper before piling into her white Mercedes SUV — with multiple bodyguards — and headed off to their next destination.

Britney's been quiet on her social-media accounts in recent days while new rumors are swirling that she could be out from The X Factor. New reports suggest Britney will be fired from The X Factor for multiple reasons, mainly her $15 million contract. Ratings fell short in the show's second season, despite the addition of new judges Britney and Demi Lovato. Thus far, however, there has been no word from Britney, the show, or Simon Cowell confirming her departure. Still, the pop princess's return to TV was just one of the reasons Britney ruled 2012, and we can't wait to see what the next 12 months have in store.

Nina Dobrev and Ian Somerhalder were in high spirits when they caught a flight out of LAX yesterday. The pair had quite a journey ahead of them as they embarked on a trip to China. The Vampire Diaries stars spent their holiday weekend with family and friends and are now on their way to Asia for what's sure to be a memorable New Year's.

Nina made a stylish departure in a classic trench, reminding us that she's one of 2012's biggest breakout fashion stars. She's not the only one on our radar; as a couple, Nina and Ian ranked among the sexiest celebrity couples of the year. 2013 will be full of opportunities and red-carpet appearances for the couple, in addition to new episodes of The Vampire Diaries returning Jan. 17. Both Nina and Ian are also People's Choice Awards nominees. Nina could take home her second consecutive win in the favorite dramatic TV actress category, while Ian is looking for a win for favorite dramatic TV actor. We'll have to wait and see if they step out for the celebration on Jan. 9 as we kick off the 2013 award season. Don't forget to follow us on Instagram and Twitter for all your award-season news, photos, and updates!

It was a very merry holiday break for Kanye West and Kim Kardashian, who were spotted holding hands all over LA in the days leading up to Christmas. The couple dined out at Spago in Beverly Hills, CA, on Saturday and then stopped by a local nail salon on Christmas Eve for his-and-her manicures. Kim was likely getting her nails freshly polished for Kris and Bruce Jenner's annual Christmas Eve bash. The entire Kardashian and Jenner family gathered together with Kanye, Scott Disick, and Lamar Odom for the festive occasion. Guests were greeted by carolers, and even Santa made an appearance.

It seems the party went well into the night, but the family was up bright and early the next morning to open presents before heading downtown to watch Lamar and the LA Clippers take on the Dever Nuggets at the Staples Center. Khloe kept an intense gaze on the game from her courtside seat, while Kim and Kanye cuddled close. Kim and Kanye's PDA landed them a spot on our list of favorite new celebrity couple of 2012 — who gets your vote? The Kardashian luck seems to be rubbing off on the Clippers, since the team took home its 14th consecutive win. Kim and Khloe have been lucky charms in the past: Kim was with Reggie Bush when the New Orleans Saints took home a Super Bowl ring, and the Lakers won their last championship in 2010, following Khloe and Lamar's wedding.

Gwen Stefani took a stroll with her guys Gavin, Kingston, and Zuma Rossdale through London's Primrose Hill on Sunday. The foursome met up with Gavin's daughter, Daisy Lowe, who was spending the afternoon with her pup Monty. The Stefani-Rossdale clan generally spends Thanksgiving in LA with Gwen's relatives and then travels to the UK, where they celebrate Christmas with Gavin's side of the family. Gwen and Gavin are winding down another successful and eventful year. Gwen released a new album with No Doubt, and Gavin traveled the globe with Bush, all while coparenting Zuma and Kingston. Gwen ranks among the most stylish moms of 2012, and it seems she's planning to take that title into the new year, as she recently landed the January 2013 cover of Vogue.

It was a year of love for our favorite A-listers who showed PDA on romantic getaways, courtside at sporting events, and front row at award shows. Brad Pitt and Angelina started the year off with a passionate kiss at the Screen Actors Guild Awards, while Blake Lively and Ryan Reynolds made their own fireworks on the Fourth of July. Many more celebrities had their fair share of romantic moments this year, so click through to see all 100 of the sweetest PDA pics from 2012!