sobrina linda/hermosa/bella
"your are welcome my beautiful niece"
You could say "Gracias mi sobrina hermosa".
eres bienvenido a mi sobrina bella
Sobrina or if you wish to say My Niece it's "Mi Sobrina"It is "sobrina". Nephew is "sobrino".
ma belle petite nièce Sophie Marie
niece = Nichte
Your niece's daughter is your grand niece, or, as some would say, your great niece.
ma nièce my niece
in spanish niece is sobrina
My bother/ sisters child. or my friends niece. it was her niece. I you don't have a niece just never say the words I have a niece.
Your niece's daughter is your grand niece, or, as some would say, your great niece.
"mon amour de nièce" sounds the best for "lovely". The term for "beautiful" (belle) is too confusing for family names, as it means "step" (as in step father).