Nov 2 (Reuters) - Ralph Lauren Corp raised its full-year revenue forecast on Tuesday, helped by resurgent demand for high-end apparel in North America. The retailer said it expects constant currency fiscal 2022 revenue to rise 34% to 36%, compared with a prior forecast of a 25% to 30% increase. (Reporting by Uday Sampath in Bengaluru; Editing by Krishna Chandra Eluri)