How do to say your beautiful in french?

If you mean to say "you are beatiful",

you will say it "tu es beau",if he is a boy.

or you will say it "tu es belle",if she is a girl.

but if you mean to say "your beatiful",you will say it "ton beau..."if the world after "beau" is masculin,e.g.: if you want to say "your beautiful face",you will say it "ton beau visage" because the world "visage meaning face in English"in masculin...

and you will say "ta belle..."if the Word after "belle" is feminine,e.g.:if you want to say "your beautiful daughter" you will say it "ta belle fille" because the world "fille meaning daughter in English is feminine".