Which actor's aunt was the first to sing "Mambo Italiano"?

"Mambo Italiano" is a popular song written by Bob Merrill in 1954 for the American singer Rosemary Clooney. The song became a hit for Clooney, reaching the Top Ten in record charts in the US and France and No. 1 in the UK Singles Chart early in 1955. The song has shown enduring popularity, with several cover versions and appearances in numerous films.

Rosemary Clooney (May 23, 1928 – June 29, 2002) was an American singer and actress. She came to prominence in the early 1950s with the song "Come On-a My House", which was followed by other pop numbers such as "Botch-a-Me", "Mambo Italiano", "Tenderly", "Half as Much", "Hey There" and "This Ole House". She also had success as a jazz vocalist. Clooney's career languished in the 1960s, partly due to problems related to depression and drug addiction, but revived in 1977, when her White Christmas co-star Bing Crosby asked her to appear with him at a show marking his 50th anniversary in show business. She continued recording until her death in 2002.