ET has the first photos of Lindsay Lohan on "Ugly Betty."

ET confirms the news that LINDSAY LOHAN began shooting scenes for a guest spot on ABC hit "Ugly Betty" over the weekend.

Lohan will star in the season finale, to air May 22, as well as five episodes next season, playing a mean girl, who was a former classmate of Betty's (AMERICA FERRERA) who is now back in her life.