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Gall bladder duplication is a rare congenital anomaly. True duplication is still rarer. Pre-operative detection helps in avoiding complications or missing the gall bladder during surgery. Ultrasonography (USG) and magnetic resonance cholangiography are investigation of choice. Laparoscopic cholecystectomy is the preferred modality for management of double gall bladder. We present a case diagnosed as cholelithiasis on USG. While doing laparoscopic surgery 2 gall bladders were found. She had a normal gall bladder that was lying in the supraduodenal area. It had cystic duct that joined the common bile duct. There was an accessory gall bladder attached to the anterior free margin of the liver. This gallbladder was occluded with a big solitary calculus occupying the whole of gall bladder cavity and had a small feeding vessel; whereas its duct had fibrosed.