Ready or not, here she comes!

Kristen Stewart was photographed Wednesday in LAX airport preparing to catch a flight to Canada to attend the Toronto International Film Festival. The 22-year-old Twilight actress will make her first red carpet appearance Thursday -- after she was caught cheating on boyfriend Robert Pattinson with married Snow White and the Huntsman director Rupert Sanders in July -- at the premiere of On the Road.

PHOTOS: Kristen's fling with Rupert

Stewart headed solo through the airport sporting two new looks: large thick-framed eyeglasses (instead of her favorite dark sunglasses) and a cast on her left middle finger. The actress wore her hair wavy and styled a loose white T-shirt, jeans and short black boots while carrying her standard leather jacket.

Noticeably still on her finger was a gold ring that's rumored to be a previous gift from Pattinson, 26. In mid-July, Us Weekly released exclusive photos of Stewart engaged in a steamy makeout session with Sanders, 41. Since the scandal, the actress has been keeping a low profile and a source told Us Weekly she is "close to a total meltdown."

PHOTOS: Rob and Kristen's romance

In an interview conducted before her cheating scandal with British Vogue, the On the Road star admitted she understands why people criticize her for seeming detached at appearances. "I'm not that smooth. I can get clumsy around certain people," she said. "Like if I were to sit down and think, 'OK, I'm really famous, how am I going to conduct myself in public?' I wouldn't know who that person would be!"

PHOTOS: Kristen and Rupert's road to scandal

And Stewart is worried about how her affair has turned fans against her. "The heartache with Rob is so much to bear," a pal of the star told Us, "but Kristen has has always valued her career. She doesn't want this to jeopardize her future in acting."

This article originally appeared on Kristen Stewart Catches Flight to Toronto International Film Festival