Derek Hough

Julianne Hough and Josh Duhamel were joined by their famous significant others at the LA premiere of Safe Haven in LA last night. Julianne wore a silver Alberta Ferretti dress to pose alongside her boyfriend, Ryan Seacrest, on the red carpet. Meanwhile, Josh went for a bright blue Ralph Lauren suit for the premiere, but opted to not walk the red carpet with his wife, Fergie. However, the couple did share a hug off of the red carpet and chatted with friends at the afterparty. Josh was busy yesterday, appearing on The Tonight Show as well. Other famous faces celebrating the latest Nicholas Sparks big-screen adaptation included Julianne's brother and Dancing With the Stars dancer Derek Hough, as well as Josh and Julianne's costar Cobie Smulders, who wore a black Saint Laurent jumpsuit. Safe Haven hits theaters on Valentine's Day.

If you're a fan of shirtless celebrities, it's likely you had a very good year. Some of our favorite stars showed off their toned abs and arms over the past 12 months, and we've rounded up the hottest moments for your viewing pleasure. Jon Hamm filmed Mad Men in retro swim trunks, Channing Tatum took a dip in the ocean in Australia before winning his Sexiest Man Alive title, and James Marsden showed off his toned pecs at the beach. There's lots more to enjoy, so click through to see all the best shirtless moments of the year.

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Tom Cruise, Julianne Hough, and Diego Boneta posed together on the rock-and-roll-themed Rock of Ages red carpet in LA yesterday evening. While most big premieres happen midweek, this one was enough of a party to merit the Friday-night spot. The trio, with Julianne standing out in her bright yellow dress, were joined by other costars, including Russell Brand and Catherine Zeta-Jones. Josh Duhamel dressed the part in a long wig and no shirt with Fergie by his side, while Zac Efron kept it casual to check out the scene. Jennifer Aniston's boyfriend Justin Theroux wrote the screenplay for Rock of Ages, and he was looking dapper in a sleek suit, though he didn't have Jen on his arm for the arrivals. Aniston did look sexy in white for an event to honor Shirley MacLaine the night before. Also without a date was Tom Cruise, whose wife Katie Holmes is currently in Asia for her own work obligations.

Lauren Conrad grabbed dinner at Beso in LA last night with her Dancing With the Stars buddies, Derek Hough and Mark Ballas. After the meal, the trio moved on to end the night at the nightclub Tru. Lauren Conrad is dating Derek Hough, according to rumors, and they apparently went to great lengths not to be photographed together. Derek joined up with LC after his latest stint on TV. He and partner Ricki Lake did a tough routine, and he tweeted later, "Cheers to all the support tonight . . . Glad 80s week is over — not my cup of tea! Was a tough mash up of 80s and foxtrot this week — all good. Congrats to everyone tonight and hopefully we'll be back next week." Despite the time commitment to Dancing, Derek also spent a recent night out with Lauren at Trousdale. Lauren and Derek were seen kissing, adding even more fuel to the rumors about their relationship.

Lauren Conrad said a quick goodbye to Dancing With the Stars performer Derek Hough last night, then drove away with from LA's Playhouse with a big smile on her face. It was the second night in a row of partying for LC after she stopped by the Roosevelt in leather leggings on Wednesday. Lauren's been single, since her breakup with Kyle Howard; though, LC was momentarily linked to Teen Wolf's Colton Haynes. Derek is also reportedly single; however, he's spending long days in the dance studio with his new prime-time partner, Ricky Lake. Whether Lauren and Derek are more than just friends remains to be seen, but it's certain she'll be busy for the rest of the year. Lauren's launching her own makeup line along with new collections for her Paper Crown brand.

Ashley Tisdale and Julianne Hough spent their Saturday afternoon out riding jet skis in Miami. Julianne's brother Derek was along for the fun, and he went shirtless while wearing just his swimsuit. It seems Julianne has been able to enjoy many hours away from the set during her stay in Florida working on Rock of Ages — there's been plenty of Julianne Hough bikini time between her visits to the pool and beach! Ashley has likewise been getting good use out of her two-piece collection this Summer, including during a getaway to Mexico and her birthday celebrations in Las Vegas. Ashley's trip to Florida was so that she could see her boyfriend Scott Speer, who's shooting Step Up 4 there. She followed up the day on the water by meeting up with Scott for an Italian dinner. Julianne, meanwhile, was busy yesterday checking out a screening of her other new movie, Footloose. The dance film is out in October, and she got her brother and Rock of Ages buddies like Adam Shankman and Diego Boneta together to check out an advance cut.

Julianne Hough headed to the pool at her Miami hotel yesterday. Her brother, Derek, and his girlfriend were along for the sunny day, which happened to be Julianne's 23rd birthday. She lounged in her bikini after heading to the Rock of Ages set, where the cast and crew, including director Adam Shankman, apparently threw her a surprise celebration. The fun kicked off over the weekend, though, when Julianne's boyfriend, Ryan Seacrest, and best friend, Maude, joined her in Florida. Julianne Hough and Ryan Seacrest showed PDA poolside when the actress wasn't busy making a splash in the water.

Award season's star-studded weekend kicked off with a bang at a Bulgari party to honor Paul Haggis and Simon Fuller in LA last night. The bash, which benefited the two charitable organizations Save The Children and Artists For Peace and Justice, brought together beautiful ladies decked out to hit the red carpet. Demi Moore still sported her sun-kissed glow from her recent bikini-filled getaway with her husband Ashton, and she'll be out again this evening at the Critics' Choice Awards — we'll be broadcasting live from the arrivals, so tune in here! Malin Akerman, who shows off her range in the HappyThankYouMorePlease trailer, and Kirsten Dunst brought splashes of color to the dark step and repeat, while Olivia Wilde blended in with her dark dress. Inside the event Olivia twittered about having a few drinks before hitting the stage while Julianne Hough let fans know her mixed feelings about returning to her usual bright blond locks. Julianne had her brother Derek as a date instead of her boyfriend Ryan Seacrest, who has been hard at work gearing up for the return of American Idol. A few of the other hot guys who hit yesterday evening's soiree — Adrien Brody, Gerard Butler, Ricky Martin, and Chace Crawford. We'll be seeing a lot more of these famous faces as the next few days unfold, so stay tuned for tonight's live stream and all of our up-to-the-minute coverage of Golden Globe weekend!