Kristen Stewart cut a lonely figure on the red carpet at the Toronto Film Festival, for the opening night premiere, which was her film On The Road.

kristen stewart
Kristen Stewart cut a noticeably slim figure on the red carpet for On The Road in Toronto

It was her first public appearance since she was engulfed in a cheating scandal with her Snow White and the Huntsman director, Rupert Sanders, which is thought to have caused her split from Twilight co-star Robert Pattinson.

The actress posed for photos, spoke to television crews and signed autographs. When asked how she was coping, she replied, "I'm doing fine."

Stewart stars in the big screen adaptation of the Jack Kerouac novel, along with co-stars Sam Riley and Garrett Hedlund, who were with her on the red carpet.

robert pattinson
Back when life was simple... only two short months ago

The star looked pretty and groomed, but was noticeably slim in a floral Zuhair Murad dress, with her hair in a thick ponytail.

Meanwhile, back in Los Angeles, Robert Pattinson turned out at the VMA Awards, to debut the last ever trailer for a Twilight film - Breaking Dawn Part 2, which is in cinemas next month. Pattinson shared the stage with several of his castmates.

Loading Slideshow...
  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festivalon September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • Kristen Stewart

    Kristen Stewart (center) is shown on the red carpet at the gala premiere for the movie "On the Road" during the 2012 Toronto International Film Festival in Toronto on Thursday, Sept. 6, 2012. (AP Photo/The Canadian Press, Chris Young)

  • Kirsten Dunst, Garrett Hedlund, Kristen Stewart

    Cast members Kirsten Dunst, left, Garrett Hedlund and Kristen Stewart are shown before the gala premiere of "On The Road" during the Toronto International Film Festival on Thursday Sept. 6, 2012 in Toronto. (Photo by Evan Agostini/Invision/AP)

  • Kristen Stewart

    Actress Kristen Stewart is shown at the gala premiere for "On the Road" during the Toronto International Film Festival on Thursday Sept. 6, 2012 in Toronto. (Photo by Evan Agostini/Invision/AP)

  • Kirsten Dunst, Garrett Hedlund, Kristen Stewart

    Cast members Kirsten Dunst, left, Garrett Hedlund and Kristen Stewart are shown before the gala premiere of "On the Road" during the Toronto International Film Festival on Thursday Sept. 6, 2012 in Toronto. (Photo by Evan Agostini/Invision/AP)

  • Kristen Stewart

    Kristen Stewart is shown on the red carpet at the gala premiere for the movie "On the Road" during the 2012 Toronto International Film Festival in Toronto on Thursday, Sept. 6, 2012. (AP Photo/The Canadian Press, Chris Young)

  • Kristen Stewart

    Actress Kristen Stewart is shown at the gala premiere for "On the Road" during the Toronto International Film Festival on Thursday Sept. 6, 2012 in Toronto. (Photo by Evan Agostini/Invision/AP)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: (L-R) Actors Kirsten Dunst, Garrett Hedlund , and Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart (L) attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • De izquierda a derecha Sam Riley, Kristen Stewart y Garrett Hedlund en una escena de la película "En el camino" en una fotografía proporcionada por IFC Films. La cinta será presentada en la 37 a edición del Festival Internacional de Cine de Toronto. (Foto AP/IFC Films, Gregory Smith)

  • "On The Road" Premiere - Arrivals - 2012 Toronto International Film Festival

    TORONTO, ON - SEPTEMBER 06: Actress Kristen Stewart attends the 'On The Road' premiere during the 2012 Toronto International Film Festival on September 6, 2012 in Toronto, Canada. (Photo by Jason Merritt/Getty Images)

  • Kristen Stewart, Rupert Sanders

    Kristen Stewart y el director Rupert Sanders en el estreno de "Blancanieves el el cazador" en Los Angeles en una fotografía del 29 de mayo de 2012. Stewart y Sanders se disculparon públicamente después de que surgieran fotografías de un breve y apasionado romance que tuvieron. Stewart es novia del actor Robert Pattinson y Sanders está casado. (Foto Jordan Strauss/Invision/AP)

  • Kristen Stewart, Rupert Sanders

    Kristen Stewart y el director Rupert Sanders en el estreno de "Blancanieves y el cazador" en Los Angeles en una fotografía del 29 de mayo de 2012. Stewart y Sanders se disculparon públicamente después de que surgieran fotografías de un breve y apasionado romance que tuvieron. Stewart es novia del actor Robert Pattinson y Sanders está casado. (Foto Jordan Strauss/Invision/AP)

  • Robert Pattinson, Kristen Stewart

    El actor británico Robert Pattinson y la actriz estadounidense Kristen Stewart llegan al estreno de "La saga Crepúsculo: Amanecer - Parte 1” en Londres en una fotografía de archivo del 16 de noviembre de 2011. Stewart y el director Rupert Sanders se disculparon públicamente el miércoles 25 de julio por un breve y apasionado romance que tuvieron. Stewart es novia de Pattinson y Sanders está casado. (Foto AP/Joel Ryan, archivo)

  • Kristen Stewart, Robert Pattinson

    Kristen Stewart, izquierda, y Robert Pattinson reciben el premio Ultimate Choice en los Teen Choice Awards el domingo 22 de julio de 2012 en Universal City, California. (Foto John Shearer/Invision/AP)

  • Mackenzie Foy, Kristen Stewart, Robert Pattinson

    Mackenzie Foy, Kristen Stewart y Robert Pattinson al llegar a la mesa redonda de “La saga Crepúsculo: Amanecer - Parte 2” en la convención Comic-Con el jueves 12 de julio de 2012 en San Diego, California. (Foto John Shearer/Invision/AP)