It Happened in Rome
Souvenir d'Italie (original)
Three girls are on a hitchhiking trip through northern Italy, the riviera, Venice, Pisa and Rome.
Starring June Laverick, Isabelle Corey, Ingeborg Schöner, Gabriele Ferzetti, Massimo Girotti, Antonio Cifariello, Isabel Jeans, Mario Carotenuto, Vittorio De Sica, Alberto Sordi
Watch "It Happened in Rome" on Amazon released in 1957. It's a comedy and romance movie, and has a rating of 5.7 out of 10 from Imdb which is fairly okay for this kind of movie, and is currently only available for purchase or rent.