Kristen Stewart is reportedly having sleepless nights over her festival appearance at the Toronto Film Festival.
It will be the first red carpet appearance for the actress since news broke about her affair with director Rupert Sanders.
On The Road is the latest film from the actress and it will open the festival later this week and Stewart is hoping that it will be well received.
A source told RadarOnline: "Kristen Stewart hasn’t been able to get a wink of sleep in the run-up to the film festival. She’s been fretting over the film’s premiere."
"Kristen's worried that because it opens the festival, a lot is expected of it and just prays that it's well received."
Since the news about the affair broke Stewart has stayed out of sight and was missing from the UK premiere of the movie.
However Robert Pattinson has been out and about promoting his latest movie Cosmopolis over the last few weeks.
On The Road sees Stewart team up with Garrett Hedlund, Sam Riley, Amy Adams and Kristen Dunst and is a big screen adaptation of the novel by Jack Kerouac.
On The Road is released 12th October