Bee Gees front man Robin Gibb stepped out on Monday looking extremely thin and sick, and RadarOnline.com has the shocking photos.

The 61-year-old singer was taken to Radcliffe Hospital in Oxford on October 13 for inflammation of the colon, and his twin brother Maurice, who was also a member of the Bee Gees, died of an intestinal disease in 2003.

Robin also underwent emergency abdominal surgery last year to remove part of his intestine after he experienced agonizing pain at a concert in Belgium.