How do you say cool girl in German?

Answer 1

Ich denke, du bist heiß/scharf.

Ich finde dich heiß/scharf.

You would want to use the informal style as this is certainly not something you would say to someone you address formally (unless you're drunk maybe).

I would recommend I think you are beautiful though.

informal

Ich denke, du bist schön.

Ich finde dich schön.

formal

Ich denke, Sie sind schön.

Ich finde Sie schön.

Answer 2

"Cool" has been used widely in German slang for several decades now and is generally understood by most people, so one could simply say "cooles Mädchen".

Other possible translations of "cool" varies significantly depending on age and location, but here (if I dare) are a few: tolles Mädchen, irres Mädchen, außergewöhnliches Mädchen, geiles Mädchen and (I`m sure) many more.

Answer 3

Heis Frau