Tom Sturridge

Robert Pattinson was in NYC yesterday with his best friend, Tom Sturridge. The two guys were seen heading into their respective hotels — Rob buried his hands in his pockets while at the Bowery Hotel, and Tom clutched his fiancée Sienna Miller's hand as they walked into the Crosby Street Hotel. Tom, Sienna and their daughter, Marlowe, have been in the Big Apple for the past week while working mum Sienna promotes her new HBO project, The Girl. She made a jaunt east for a premiere Saturday during the Hamptons International Film Festival, and on Sunday morning morning dressed up for the Variety Performers Brunch at Nick & Toni's in East Hampton. Rob, meanwhile, has a break before he has to embark on his next press endeavour ahead of Breaking Dawn Part 2's Nov. 16 debut.

Sienna Miller and Tom Sturridge were low-key on Friday while out for a walk in NYC. The couple went for a stroll without their baby daughter, Marlowe Sturridge, who entered the world in early July. Sienna, Tom, and Marlowe were in Italy last month for the little one's first-ever holiday. The end of the year will be full of travel for the family, since both Sienna and Tom have movies to promote. His On the Road arrives in US theatres Dec. 21 (it's already out here), while Sienna's The Girl, in which she plays Tippi Hedren opposite Toby Jones as Alfred Hitchcock, airs on HBO Oct. 20. During an interview Sienna granted while in Italy, she spoke about the challenges of playing a real person. She said, "I went to meet the real Tippi to help understand the role, and found that under the cool Scandinavian exterior she's a warm and maternal figure. . .  It was a physically demanding shoot. I was in my first trimester, throwing up a lot. One of the great challenges was maintaining Tippi's stoicism."

Sienna Miller and Tom Sturridge were out on the town in London on Thursday night. A pregnant Sienna paired her black top, which covered her baby bump, and pants with a white blazer. The duo hung out in Soho then grabbed a cab back home. Sienna and Tom are together again in the UK after work took him to France last week. Tom premiered On the Road at the Cannes Film Festival with costars Kirsten Dunst, Garrett Hedlund, and Kristen Stewart. Tom and Kristen linked up again to support their mutual pal Robert Pattinson's debut screening of director David Cronenberg's Cosmopolis. Sienna, meanwhile, hung out in England. Tom was back by last weekend, when he and Sienna gathered friends and family for a special event, their baby shower. It took place last Sunday, and she was photographed beaming as she left the event with Tom right behind her, carrying presents.

Kristen Stewart chose a sexy Reem Acra gown for the premiere of Robert Pattinson's Cosmopolis at the Cannes Film Festival last night. She posed alongside Rob's pal and her On the Road costar Tom Sturridge at the event. Rob chose a hot tuxedo for his big moment after also hitting the red carpet to support Kristen at her premiere yesterday. Rob and Kristen celebrated with PDA at the afterparty along with their friends and costars. It's been an exciting time in the South of France for Rob, Kristen, and many other celebrities, and before the fun wraps up tomorrow, Reese Witherspoon will take her turn in front of the cameras.

All eyes were on Robert Pattinson as he stepped out onto the red carpet at last night's Cannes Film Festival premiere of his David Cronenberg-directed thriller, Cosmopolis. Rob kicked off his day at a casual photocall for the film, but for the formal affair he suited up in a tuxedo. He was joined on the carpet by costars Sarah Gadon and Juliette Binoche, however, he was just a few feet away from his number one lady, Kristen Stewart, who posed for photos with Tom Sturridge. Rob showed his support for Kristen and Tom's feature, On the Road, at a screening earlier in the week and Kristen and Tom seemed happy to do the same for Rob. Early reviews of Cosmopolis have been tough on the storyline, however, Rob's fans will be able to make their own judgements when the film hits cinemas later this year.

Kristen Stewart hit the red carpet for her Cannes premiere of On the Road yesterday evening. She had the company of co-stars Sam Riley, Garrett Hedlund, Tom Sturridge and Kirsten Dunst. Kirsten wore pink Dior, and Kristen was in Balenciaga. The gang spent the whole day together, having attended a press conference and photo call earlier. The movie is based on the classic 1957 Jack Kerouac novel, and in it Kristen plays Marylou, the object of affection for the two main characters, played by Sam Riley and Garrett Hedlund. It was a big risk for Kristen, who has actually been attached to the project since producers saw her in 2007's Into the Wild, because it involves more nudity than her Twilight movies.

At the press conference, Kristen spoke about her character. She said, "I love Marylou. The character is so vivid, she jumps right off the page and slaps you in the face . . . If I had to choose one character who really, truly embodied the spirit of this book, it was her. She really is this amazing link between the two boys. It's a grand statement to make, but it might not have happened without her."

Tom Sturridge didn't bring along his pregnant partner Sienna Miller, but there were plenty of other celeb couples in attendance. Robert Pattinson turned up to support Kristen ahead of his own Cosmopolis debuting at Cannes this weekend. Sam Riley had wife Alexandra Maria Lara on his arm, and co-stars Garrett and Kirsten were able to mix romance and work on the carpet.

Kristen Stewart and her On the Road castmates gathered yesterday morning for a photo call at the Cannes Film Festival. Kristen paired a white tee and black blazer with a pair of wild printed pants for the press session. She threw an arm around a Dolce & Gabbana-clad Kirsten Dunst for a series of girls-only pictures, then linked up with co-stars Sam Riley, Viggo Mortensen, Tom Sturridge, Garrett Hedlund and Danny Morgan. Director Walter Salles was also on hand.

Kristen's in France with the picture and her co-stars just ahead of her boyfriend Robert Pattinson's Cannes debut. He'll hit the Croisette himself with his David Cronenberg-directed Cosmopolis before the festival wraps up this weekend. Kristen and Robert aren't the only couple we're hoping to see making the rounds. Tom may have brought along his pregnant partner Sienna Miller, and Sam makes an adorable pair with his German actress wife, Alexandra Maria Lara. Kirsten was already hanging out with her boyfriend — she's dating Garrett.