During his two decades living at Graceland, Elvis Presley celebrated Christmas with his inner circle and their families in a private party that fans could only imagine—until now.

His cousin Billy Smith, one of the only people left alive who knew the real King, has previously shared incredible memories of enjoying the holiday season with the star.

In an unearthed interview, the last surviving original Memphis Mafia member and his wife Jo described the festive decorations throughout the…