What is the Italian translation of the English phrase 'Happy 60th birthday'?

Felice sessantesimo compleanno! is an Italian equivalent of the English phrase "Happy 60th birthday!"

Specifically, the feminine/masculine adjective felice is "happy". The masculine ordinal adjective sessantesimo means "sixtieth (60th)". The masculine noun compleanno translates as "birthday".

The pronunciation will be "fey-LEE-tchey SES-sahn-TEH-zee-moh KOHM-pley-AHN-noh" in Italian.