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Mar. 20: Looking back 30 years to Lady Di's wedding

With only six weeks before the highly anticipated royal wedding, Kate Snow reports on what most believed at the time was the perfect storybook romance of Diana and Charles. From the ring to the dress, the bridesmaid to a special guest, Snow looks back at the making of the ultimate royal wedding.  This hour-long Dateline report airs Sunday, March 20th, at 7pm/6c.