It may depend on the context to get the best translation. A basic translation would be Quest'è mia sorella. But if you're introducing her to someone, you might want to say "Ti presento mia sorella"
"Sister" in English means sorella in Italian.
"Your sister" in English is tua sorella in Italian.
"Twin sister' in English is gemella in Italian.
The Italian word for brother is "fratello" and for sister is "sorella".
"Not with my sister!" in English is Non con mia sorella!in Italian.
"Beautiful sisters" in English is belle sorelle in Italian.
"For the love of my sister" in English is Per l'amore di mia sorella in Italian.
"I talked to your sister yesterday" in English is Ho parlato con tua sorella ieri in Italian.
sister = sorrella young = giovani young sister = giovane sorella.
Ti amo, sorella! is an Italian equivalent of the English phrase "I love you, sister!" The declarative/exclamatory sentence also translates into English as "I do love you, sister!" The pronunciation will be "tee A-mo so-REL-la" in Italian.
Amica sorella is an Italian equivalent of the English phrase "sister friend".Specifically, the feminine noun amica means "(girl) friend". The feminine noun sorellatranslates as "sister". The pronunciation will be "a-MEE-ka so-REL-la" in Italian.
to say "sister" in Italian, use the word "sorella". I hope this helps and good luck studying Italian! :)