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It may have been boyfriend Robert Pattinson's premiere, but all eyes were on Kristen Stewart as she worked the red carpet in a sexy crimson Reem Acra number, at the Cannes Film Festival, on Friday evening.

But the Twilight star walked the Cosmopolis red carpet with another man -- her On the Road co-star, Tom Sturridge.

As of now, Rob and Kristen are to appear onscreen for the last time when the final installment, The Twilight Saga: Breaking Dawn - Part 2, hits theaters this November. At least they still have each other!

Storm

These two can't keep their hands off each other!

Maybe it's the romantic atmosphere in Cannes, but Robert Pattinson and Kristen Stewart, who usually keep their relationship under wraps, had a PDA-filled evening on a balcony in France for the world to see, on Thursday night.

The Twilight costars have never officially confirmed their relationship, but after this trip, there is no denying they're a couple!

"Robsten" was also photographed enjoying a steamy make out sesh at the Film Fest on Wednesday, after the premiere of Kristen’s upcoming flick, On the Road, and although they walked the red carpet separately, they were attached at the hip at the after party.

Earlier this month, the Snow White and the Huntsman star let slip to Elle mag, after seeing a copy of the Guy de Maupassant novel “Bel Ami” during the interview: “Oh my God, my ****** boyfriend just did this movie! The French, they’re up in arms that he did it.”

Kristen is expected to be by her man's side when his latest flick, Cosmopolis, debuts at the Film Fest tonight!

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Rob Pattinson and Kristen Stewart attended the premiere of On The Road at the Cannes Film Festival, and it looks like K. Stew was able to shake off the awkward moment she shared with co-star Kirsten Dunst at the film's photo call earlier today.

But what was Kate Upton doing at the premiere, and why was she wearing a frumpy 1980s prom dress? So many questions!

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Kristen Stewart sure knows how to raise eyebrows on the red carpet.

The Twilight star posed with Kirsten Dunst at the Cannes Film Festival to promote their upcoming movie On The Road ... but why the heck is KStew holding on to her co-star's tummy?! It's not like Ms. Dunst has a bun in the oven. Awkward.

Actors Garrett Hedlund, Sam Riley and Viggo Mortensen are starring alongside the two ladies in the movie based on the famous Jack Kerouac book.

See the entire cast in our gallery below.

Charlize Theron and Kristen Stewart attended the Snow White and the Huntsman photocall in Madrid today, and the ladies looked lovely when they posed for pics together. Charlize rocked a radiant red Giambattista Valli dress while Kristen went with a dark BCBG number and Christian Louboutin shoes.

Kristen recently chatted with MTV about seeing the final version of the film, and she gushed, “I was so excited. It was so, so beautiful when it was light and so exuberantly happy, and then when it was dark it was wretched and disgusting.”

Charlize plays the Evil Queen, and of course, K. Stew plays Snow White in Rupert Sanders' adaptation of the classic fairytale, which hits the big screen in less than 2 weeks. In case you missed the trailer, check it out here -- it looks 100 times better than Mirror Mirror, so we'll definitely be buying tickets to see this one!

Elle Magazine

Easy there with the F-bombs, K. Stew!

Kristen Stewart covers the latest issue of Elle Magazine, and the 22-year-old starlet chats about her love life, how much she hates riding horses and which movie roles she'd like to tackle in the near future. While she looks gorgeous and glam in these shots, her language was anything but ladylike during her interview!

Kristen and the reporter spent some time at a local book shop, and she became quite excited as they browsed through the store. When she stumbled across a copy of Bel Ami, she exclaimed, "Oh my God, my f*cking boyfriend just did this movie! The French, they’re up in arms that he did it."

Kristen was home-schooled from seventh grade onward, and she admits that this is something she regrets. "Because I didn’t go to f*cking school, I feel I would have had a bit something extra if I had. Maybe because my life is so perfect, when I see the other side of life, it just seems like, almost like I want ... You can learn so much from bad things. I feel boring. I feel like, Why is everything so easy for me? I can’t wait for something crazy to f*cking happen to me. Just life. I want someone to f*ck me over! Do you know what I mean? It’s one of the reasons I want to act. I love living in different worlds, because a lot of times mine is pretty nice and easy."

Kristen is already thinking of future acting roles, and she reveals that she'd love to play the protagonist in a big screen version of William Styron’s Lie Down in Darkness "Have you ever read Lie Down in Darkness?" she asked. “I want to play Peyton more than anything I can possibly taste or touch in my life. I want to play her so bad. Peyton is bright, beautiful, suicidal narcissist, preyed upon by her father. Oh, dude, she f*ckin’ loves it! She’s in love with him. I mean, I think she’s in love with him. It’s not his fault. They’re the most f*cked-up family!… There’s a script adaptation I’ve read and it’s good. Two people vying for the part of the father are Daniel Day-Lewis and Colin Firth. Daniel would be perfect."

Think she'll get her wish?

Kristen Stewart jetted back to LA from Vancouver, where she and the Twilight team were doing re-shoots for at the end of the week, for Breaking Dawn 2, to make appearances on Jimmy Kimmel and Jay Leno, to promote Snow White and the Huntsman.

We spotted the actress on the NBC studio lot, in her pre-show clothes, with a bag of Skittles in hand ...

She had to sugar-up before her appearance, to have enough energy to discuss her birthday, babies, and boredom ... check it out!

Do vampires not shower?!

Kristen Stewart stopped by Jimmy Kimmel Live on Wednesday to tape a segment with the funny man host, and let's just say "dress for the occasion" isn't in her vocabulary.

The Twilight star donned some interesting duds on her way out of the studio, and if she's going for the homeless chic look, she nailed it! From the messy, unwashed hair to the dirty white t-shirt, Rob Pattinson's leading lady has definitely seen better days...

We can't blame the 25-year-old actress, though! The brunette beauty has been working nonstop. Last week she was in Vancouver doing Breaking Dawn Part 2 reshoots, and she's also making the rounds promoting Snow White and the Huntsman.

We're crossing our fingers she enlists a stylist for her upcoming press tour!