Parastomal herniae are among the most common complications of stoma formation. The authors present an unusual case of a 41-year-old lady who presented with frequent early postprandial vomiting devoid of bile, upper abdominal distension and weight loss in the preceding 4 weeks losing weight for the last 4 weeks. Barium meal revealed herniation of the stomach through the gastric wall causing gastric outlet obstruction. Intraoperatively she was found to have a subcutaneous incarcerated parastomal hernia containing viable stomach and small bowel loops. The hernial contents were reduced back into the peritoneum and the abdominal wall defect repaired using the open sombrero repair technique.