What is this movie??

I saw it years ago, never caught its name. Basically there are 2 best friends 1 is a white skinny blonde girl the other is a black girl. The blonde girl is a bit promiscuous and has in the pool at one point. The black girl ends up getting d by this big black man in a club who has body guards and i think owns the place. Later on at the end of the movie the blonde girl pretends to be a hooker to get into his room and proceeds to 'have ' with him but murders him then tells the 2 bodyguards outside hes sleepin. then at the end in a big truck car she and her friend drive off. Thats all i can remember.