Washington, Feb 26 : Kristen Stewart blamed being an "idiot" for an injury that left her hobbling down the Oscars red carpet on crutches.

The actress is said to have stepped on glass that "cut the ball of her foot quite severely, two days ago."

She ditched her metal accessories for official snaps on the red carpet.

The 22-year-old then managed to hop on stage to present the award for Production Design Oscar alongside actor Daniel Radcliffe, Contactmusic reported.

Kristen, who wore a strapless Reem Acra gown, arrived at the Oscars solo amid reports she recently split from her on/off boyfriend Robert Pattinson. (ANI)