Be nice. -> Soyez gentil. (sounds like: swah-yay zhah[n]-tee)
Of course you can change "soyez" to "sois" if speaking to someone you would call "tu". And don't forget to make "gentil" agree in gender and number with whomever you're addressing.
Baby girl in French is: Bébé fille.
A lovely girl = une fille charmante.
fille intelligente
"une fille heureuse"
Bad is 'mauvaise' and girl is 'fille'.
Girl in french is fille
My in French is 'Ma' if you were a girl.
Française
Skinny girl is fille maigre in French.
gross girl
Baby girl in French is: Bébé fille.
Allemand (german boy) Allemande (german girl)
"Good girl" in French is "brave fille" or "gentille fille".
Êtes-vous française ? Est-ce que vous êtes française ?
In French, 'the girl' is 'la fille'.
un guide girl
fille