In The World 's Most Beautiful Woman , Gina Lollobrigida played the part of the Italian soprano , Lina Cavalieri , singing some arias from Tosca with her own voice .
Her appearance in The World 's Most Beautiful Woman ( also known as Beautiful But Dangerous , 1955 ) led to her receiving the first David di Donatello for Best Actress award ; in this film she interpreted the Italian soprano Lina Cavalieri , singing some arias from Tosca with her own voice .
Gina Lollobrigida