The royal siblings and cousins, who are in Tennessee for Guy Pelly and Lizzy Wilson's wedding, were seen at the singer's grand, white columned home, some of them sporting Elvis-style sunglasses in tribute to the King of Rock 'n' Roll.
William, Harry, Beatrice and Eugenie were also joined by Beatrice's long-term boyfriend Dave Clark as they strolled around the mansion and the 13.8-acre grounds where Elvis died in 1977.
Brothers William and Harry were both dressed down for the visit with the Duke of Cambridge, 31, sporting a light blue shirt and jeans and his 29-year-old brother wearing a navy T-shirt and jeans.
Beatrice, 25, wore a light-coloured shirt tucked into a skirt while Eugenie, 24, stepped out in a monochrome dress accessorised with a gold belt.
The royals are in Memphis to see their long-time friend Guy tie the knot with Holiday Inn heiress Lizzy.