Kristen Stewart and ‘On the Road’ Costars Appear in Marie Claire Amid Robert Pattinson Drama (PHOTO)

Kristen Stewart may have had her hands full with her fallout with Robert Pattinson, but she’ll have to put the drama aside for her many movie promotional tours this fall.

The 22-year-old actress cozies up to her On the Road costars Garrett Hedlund and Sam Riley in the September issue of Marie Claire for their Cannes Film Festival feature.

Sporting a red leather jacket, denim cut-offs and a cotton tee, the 22-year-old actress looks casual and chic as she posed with her costars during their promotional tour back in May.

Though Stewart is a pro when it comes to red carpet events, why was her onscreen husband taken off-guard? 

“[Cannes is] Overwhelming. It was my first time in France,” he said.

However, he admits that his favorite moment was “walking the red carpet with the cast at the premiere.”

“It means the world to you,” he added.

However, On the Road is just one of Stewart’s two movies to hit theaters in late 2012. Stewart will also continue to promote the last installment of the Twilight series, Breaking Dawn – Part 2, with Pattinson. The estranged couple are set to appear at MTV’s Video Music Awards on Sept. 9 and again for their promotional tour for  the movie due out Nov. 16.

On the Road hits U.S. theaters on Dec. 21.

Watch Stewart, Hedlund, and Riley step out onto the Cannes Film Festival carpet, below.