Yeah that's what I've heard too, that all they have to do is get a girl to show up.

she described exactly how they do the busts on indies...one cop go inside and try to do the money talk and two plain clothes are outside the door. After few minutes the "john" is inside, the outside guys knocks on the door asking for "peter or paul". If the girl doesn't open the door, the "john" bolts out of the room and let the other come in. Very typical LE bust and, YES, they will pin anything on the girl and even if she didn't say a WORD about money or services they have her taken to the station because they already did all the homework on her activities prior booking a phony appointment. These are the facts.