Justin Timberlake

A Marchesa-clad Jessica Biel joined her husband Justin Timberlake at his Inside Llewyn Davis premiere in Cannes today. The pair showed PDA as Justin wrapped his arms around his wife while walking the carpet. Along with Jessica, Justin was accompanied by the film's leading lady, Carey Mulligan, who wore a stunning Vionnet number for the big event. The red carpet was a couple's affair as L'Wren Scott-clad Nicole Kidman was accompanied by doting husband, Keith Urban, and Kirsten Dunst, who wore a Michael van der Ham gown, stepped out in support of boyfriend Garrett Hedlund, who stars alongside Justin and Carey in the film.

Jessica popped up in Cannes after making a fashionable stop in Monaco. She took a front row seat at Dior's runway show along with Marion Cotillard yesterday. Her husband has kept equally busy since he attended the photo call and press conference for his Inside Llewyn Davis alongside Carey and his crew and also showed support for Spinning Gold on the festival's opening day last week.

The 2013 Billboard Music Awards are rolling into Las Vegas tomorrow. It's shaping up to be a great show, with Taylor Swift, Justin Bieber, Jennifer Lopez, and Lil Wayne all scheduled to perform, while Madonna will be honoured with the Top Touring Artist award. Before we check out all the action tomorrow, though, we're taking a look back at the Billboard fun in years past. Remember when Jessica Simpson and Nick Lachey took the stage together in 2003 or when Britney Spears heated things up with Rihanna in 2011? Click through to see all the photos, and check back later for coverage from the show!

The Cannes Film Festival kicked off on Wednesday and the South of France has officially been flooded with celebrities. Carey Mulligan and Leonardo DiCaprio kicked off the festivities alongside Julianne Moore at the Opening Ceremony and The Great Gatsby premiere on Thursday. Meanwhile, Emma Watson was in awe of the fanfare when she took her own trip down the red carpet at The Bling Ring premiere yesterday. The action wasn't only on the red carpet as Rooney Mara proved when she attended a Calvin Klein bash alongside Harvey Weinstein on Thursday evening. Other stars like Justin Timberlake, Isla Fisher, Nicole Kidman, and Octavia Spencer have also been getting in on the Cannes fun this week. Be sure to check back for more Cannes Film Festival photos as they come in!

We're kicking off Mother's Day with a look back at some of our favourite stars posing with their mums. Anne Hathaway, Matthew McConaughey, Jennifer Lopez and more have all shared major career moments with their mothers over the years — click through to see all the photos, and be sure to spoil your mum today!

Justin Timberlake welcomed his celebrity pals to a special show at NYC's Roseland Ballroom last night. The performance, which was organised to celebrate his new deal with MasterCard and billed as one of the credit card's "Priceless" events, brought out JT's SNL pals Andy Samberg and Jason Sudeikis. Justin's wife, Jessica Biel, was also in the wings cheering on her husband. Andy and Jason had their ladies too — they brought their respective fiancées, Joanna Newsom and Olivia Wilde. Also out for the performance were Julianne Hough, Uma Thurman and Brooke Shields.

The Cinco de Mayo show gave Justin a chance to perform music from his latest album, The 20/20 Experience, which he recently announced will be followed up by The 20/20 Experience Part 2 in September. He sang plenty of his old songs too, from "Like I Love You" to "Cry Me a River" and "Senorita." Justin joked with the crowd, with quips like, "You're at an eight and a half. If you be honest with me, I'll be honest with you." He also asked, "Is anybody drunk yet?" After hearing some cheers, he added, "Good for you!" His frequent collaborator Timbaland emerged toward the end for a rendition of "SexyBack." It seems Justin had as great a time as the fans. He tweeted last night, "Thank you NYC and Roseland Ballroom! Had so much fun tonight. Lets do it again soon."

A slew of celebrities, politicians, entrepreneurs and media personalities came together at the Lincoln Center in NYC today for the Time 100 Gala. Though not all 100 people who made the magazine’s iconic Most Influential List could attend the event, there was no shortage of big names dressed up to celebrate the night. Justin Timberlake whispered something to his wife Jessica Biel on the red carpet, while Lena Dunham made the rounds during her arrival, linking up with Christina Aguilera and Miguel, and planting a kiss on Claire Danes. A suited-up Frank Ocean, who has been announced as part of the 2013 Splendour in the Grass line-up, brought his mother, Katonya Breaux Riley, as his date, and Olivia Munn attended on the arm of designer Michael Kors. Click through to see more celebrity snaps and zoom in on the beauty looks here.

In honour of Earth Day today, we're taking a look at the celebrities who love giving back. Whether they're thinking green in their own lives or promoting environmental habits and products, these stars do their part to help clean things up.

Click through our slideshow to see who made the list, and be sure to check out all of our eco content to celebrate Earth Day.

We're just three months into the year, and it's already been a whirlwind for Justin Timberlake. He kicked things off by announcing plans for new music, and he's been making headlines ever since with a performance at the Grammys, plans for a Summer tour in the US with Jay-Z, and more. The excitement continued yesterday when the final Billboard numbers showed that his first album in six years, The 20/20 Experience, debuted at No. 1on the charts, selling 968,000 copies in its first week. (In Australia it debuted with Gold ARIA accreditation and nearly went Platinum in its second.)

As we wait for the next instalment in JT's 2013 hot streak, take a look at what a crazy year he's had so far!