What is the Italian translation of 'You're very pretty'?

Sembrai bella is just one Italian equivalent of the phrase "You look beautiful" in English.

Specifically, the verb sembrai means "(informal singular you) are looking, do look, look" in English. The feminine adjective bella translates as "beautiful" in English. The pronunciation will be "SEHM-breye* BEHL-lah" in Italian.

*The sound is similar to that of the noun "eye" in English.