Kirsten Dunst and Garrett Hedlund arrived at LAX together last night. The couple have been dating for a few months now, having met while making On the Road back in 2010. Their picture, directed by Walter Salles, will make its debut this month at the Cannes Film Festival. Hopefully, Kirsten and Garrett will take the opportunity to go public with their romance, but they won't be the only stars on the red carpet supporting their movie. Kristen Stewart also stars, as does Tom Sturridge, Sam Riley, and Amy Adams. Kirsten was just in NYC to attend Monday's Met Ball. For the annual fashion extravaganza, Kirsten Dunst wore a Rodarte suit-dress designed by her good pals Kate and Laura Mulleavy.