kilka drobnych poprawek:
on September 4th, 1981
a frontwoman
well-built - to raczej stosuje sie w odniesieniu do kulturysty. moze and has a nice (attractive) figure.
She is very tanned - Beyoncé just murzynka, to raczej nie jest opalenizna tylko kolor skory
I don't know her but, in my opinion, she is a wonderful person
She - czemu z duzej litery?
I believe it will remain that way in the future/ I believe she will continue to be in the future