award season

The 2013 Billboard Music Awards rolled into Las Vegas on Sunday night taking over the MGM Grand. Stars hit the Billboards red carpet and made appearances on stage, but the real fun went on behind the scenes and in the audience. Check out celebrities and performers mingling backstage and posing for photo ops in between winning awards and grabbing the microphone. Madonna was the woman of the hour, hanging with Miley Cyrus, Ke$ha, Celine Dion, and others. Make sure to check out all the highlights from the Billboard Awards!

The 2013 Billboard Music Awards, which were hosted by Tracy Morgan, took over the MGM Grand in Las Vegas on Sunday! The stars hit the red carpet to kick off the night and then made their way inside to get the fun started. Bruno Mars stuck to his usual suited up look in red ensemble to open the show while Carly Rae Jepsen, who won top digital song, debuted hair of the same hue when she took the microphone to announce Icona Pop's performance of "I Love It." Shania Twain handed out the first statue of the evening to Nicki Minaj, who won top rap artist, while Selena Gomez took the stage to perform "Come and Get It." Tracy had a little fun in front of the audience by challenging Psy to a dance off while Macklemore and Ryan Lewis teamed up to sing their top rap song, "Thrift Shop." Taylor Swift, who picked up six awards before the show even started, was another of the evening's performers belting out "22" after walking the carpet in a bright blue Zuhair Murad dress. There's even more to come so stay tuned for the latest Billboard action!

After her daring punk look at the Met Gala earlier this month, Madonna made another fashion statement at the Billboard Music Awards in Las Vegas on Sunday. She skipped the red carpet and made her racy debut on stage in a black fishnet dress and a fur bomber jacket. Madonna was honored with the top touring artist award, which was presented to her by Will.i.am. She shared her gratitude for her fans saying, "Thank you for supporting me for three decades. Without you I wouldn't be here."

From the Oscars to the Kids' Choice Awards, award shows are guaranteed to bring on manicures galore. See the major polish moments from the biggest red-carpet events of 2013, including the most recent MTV Movie Awards.

— Additional reporting by Jessica Cruel and Maria Del Russo

Brad Pitt made a special appearance at the MTV Movie Awards in LA on Sunday night. He presented the award for movie of the year to The Avengers. Brad may be up for his own golden popcorn next year, if World War Z gets a nomination following its June release.

Brad made the award-show stop during a break from family time. He's been hanging on the West Coast with his kids while Angelina Jolie has been busy traveling. She popped up in London for the G8 summit last week and returned home to LA with Maddox by her side just in time for the weekend. The whole Jolie-Pitt crew was together last month, though, when they spent Easter weekend in Santa Barbara, CA.

The MTV Movie Awards red carpet at Sony Pictures Studios in LA on Sunday night was full of music and movie stars. One of the evening's performers, Selena Gomez, went gold in a Julien Maconald number, while Kim Kardashian showed off her baby bump in black. Presenter Melissa McCarthy walked the carpet in a jumpsuit, and Chloë Moretz was dressed up in denim by Louis Vuitton. Zoe Saldana, who also took the stage to present, chose a floral Givenchy look, and Kerry Washington went dramatic as well in a yellow-and-black Michael Kors gown. There are plenty more hot looks, so click through to see them all, and make sure to vote on your fashion and beauty favorites!

Liam Hemsworth brought the heat, literally, to Sunday night's MTV Movie Awards in LA. He took the stage, which was lit with flames, to present the first teaser for Catching Fire. The clip showed Liam, Jennifer Lawrence, and Josh Hutcherson in their Hunger Games characters and also revealed a peek at Philip Seymour Hoffman as Plutarch. Jennifer wasn't on hand for the show, and Liam's brother also missed out on a big night. Chris Hemsworth and his Avengers costars won movie of the year, but Chris was unable to attend since he was busy traveling back from the Caribbean, where he witnessed Matt Damon's vow-renewal ceremony over the weekend.

Bradley Cooper took the MTV Movie Awards stage at the Sony Pictures Studio in LA on Sunday night. He was the winner of the golden popcorn for best male performance for his role in Silver Linings Playbook. Bradley also took home the statue for best kiss with Jennifer Lawrence, though she wasn't on hand to accept the honor, since she's on the East Coast filming her next David O. Russell project. Bradley's multiple wins were just a few of the highlights from the MTV Movie Awards — make sure to check them all out!

Selena Gomez graced the MTV Movie Awards red carpet wearing a sexy gold Julien Macdonald fringe dress and a dramatic braid at Sony Pictures Studios in LA today. She later changed into a red look for a performance of her new single, "Come and Get It." Before hitting the stage, she shared her thoughts on Twitter, writing, "MTV Movie Awards tonight. I am so excited and nervous for the performance tonight."

Make sure to check out all the looks from the night and vote on your MTV Movie Awards fashion favorites!