je suis fille unique (you have no sister and no brother), je suis la seule fille (but you could have a brother)
"Je suis fille unique"
my first daughter is 'ma première fille' in French.
Dear daughter is 'chère fille' in French.
ta fille
I am not an only child is "je ne suis pas enfant unique" in French. Although this is correct, the way we would say it is "je ne suis pas fils unique" (only son) or "fille unique" (only daughter). Or we would say "j'ai un frère / une soeur" (I have a brother / a sister).
Belle fille.A belle fille is in French available for- the spouse of your son (daughter-in-law)- the daughter of your actual wife. (step-daughter)
"seul enfant, enfant unique". This is not gender specific, and the words "fils unique / fille unique" (only son / only daughter) are more common in spoken French.
bonjour fille
Ma cherie.
I will tell my daughter is: je vais dire a ma fille
You have a beautiful daughter = vous avez une belle fille.
la petit fille