La tua sorellina carina -- in which the feminine singular definite article la ("the") does not translate into English -- is an Italian equivalent of the English phrase "your pretty little sister." The pronunciation will be "la TOO-a SO-rel-LEE-na ka-REE-na" in Italian.
"How pretty!" in English is Che carina! in Italian.
"Pretty female dog" in English is cagna carina in Italian.
fantabulo
"The pretty bright one" in English is il luminoso grazioso in Italian.
"My pretty girl" in English means la mia bellina ragazzain Italian.
Carine ragazze italiane
"Hi, pretty lady!" in English means Ciao, bella donna! in Italian.
'Elegante' is pretty close!
giacca carina
bella
bella bionda
"I think you're pretty" in English means Penso che sei carina in Italian.