The 52-year actor, who is best known for his straight-faced roles in films like "Schindler's List", "The English Patient", "Great Expectations" and "Skyfall", was all smiles and full of fun as he premiered his new movie "A Bigger Splash" at Palazzo del Casino, reported People magazine.
Fiennes busted a move and appeared to be paying tribute to famous dance moves from films like "Saturday Night Fever" and even Psy's "Gangnam Style" video.
His dancing was so good, the actor won applause from the crowd and co-star Tilda Swinton.