The 28-year-old actress took a selfie while she is topless, using her long red locks to cover her modesty, reported Ace Showbiz.
"Another matinee. Another night. Another day. #speedtheplow. Grateful for my job. Life. Supporters. Friends and family," she captioned the picture.
It looks like the photo was taken in her dressing room at London's Playhouse Theatre, where she currently stars in David Mamet's 'Speed the Plow'.
Lohan previously snapped a picture of herself in the dressing room.