Ladies your help is greatly appreciated:)?

I am going clubbing again this saturday and last time i wore a tight muscle shirt whicvh impressed a lot of girlsbut this time what should i wear i have a hip hop sleeveless shirt that is tight which is real nice and can i wear blue jeans or black jeans with it?? Also when i was front grinding wit this girl i felt like i didn't know what i was doing i was kinda swinging my legs to side to side with the music flow but do you have to kind of move in cricles while you swing your legs left to right or just side to side motion?? your help is gratly appreciated!!!