"Jesteś piękna" is for female term or male?

also say when to use 'na' and 'ny' (i.e correct use of Gender in polish)

jesteś piękna is for female

in nominative (basic form) female adjectives always take an -a ending while male adjectives end in -y or -i (piękny, krótki)

there is also a neuter gender in Polish - in nominative it ends in -e or -ie (piękne okno, krótkie śniadanie)

Thanks bro :)