You have a nice smile = Du hast ein schönes Lächeln (informal) You have a nice smile = Du hast ein schönes Lächeln (formal)
to smile: chatge
The phrase "You have a nice smile" in Russian is "У вас есть приятная улыбка."
Tell her she is pretty, has a nice smile, so on.
I love your smile = ich liebe Dein Lächeln
Just tell her you like her smile, she will obviously Smile. But, If she likes you, you won't need to make her smile, she will just naturally smile whenever she looks at you. Simple say something nice do something nice and then be funny and smile.
un beau sourire
aha; you know you have a nice smile when you go into the bathroom and look in the mirror, and smile for no reason. you know you have a nice smile when you practice it, and you know you have a nice smile when you agree with people when they tell you that you have a nice smile. =]
Tienes un buena sonrisa