Is 'Ciao Bella' an Italian phrase?

Yes, the phrase 'Ciao, Bella' is Italian. The interjection 'ciao' means 'hello' and 'goodbye'. The feminine adjective 'bella' means 'beautiful, handsome'. Together, they're pronounced 'chow* BEHL-lah'.

It's what's said to a 'beautiful' female. It becomes 'Ciao, Bello' to a 'beautiful' or 'handsome' male. It's pronounced 'chow* BEHL-loh'.

*The sound 'ow' is similar to the sound in the English adverb 'how'.