Stai impressionantemente bella! in the singular and State impressionantemente belle! in the plural are Italian equivalents of the Engilsh phrase "You look amazingly beautiful!" Context makes clear which form suits. The respective pronunciations will be "steye eem-PRES-syo-NAN-tey BEL-la" in the singular and "STA-tey eem-PRES-syo-NAN-tey BEL-ley" in the plural in Italian.
"Beautiful horse" in English is bel cavallo in Italian.
"Beautiful night" in English is bella notte in Italian.
"Beautiful mommy!" in English is Bella mamma! in Italian.
"Beautiful mountains!" in English is Belle montagne! in Italian.
"Beautiful walls!" in English is Bellissime mura! in Italian.
"Beautiful woodland!" in English is Bel bosco! in Italian.
"Beautiful moments!" in English is Bei momenti! in Italian.
"Beautiful Rome!" in English is Bella Roma! in Italian.
"Beautiful dream" in English is bel sogno in Italian.
"Beautiful nephew" in English is bel nipote in Italian.
"Beautiful disaster" in English is bel disastro in Italian.
"We are very beautiful!" in English is Siamo bellissime!in Italian.