"star"???? Any girl that is willing, is at least a 6 on the 1 to 10 contiuum and has a decent body (hey if not they can brand themselves BBW's and still get work) can get at least 40 shoots before they start escorting.
Half of the women in LA could get work if they were "willing".
Willing being the x factor doesn't make any girl a "star", it simply makes them willing... And you would have to be a total douche to refer to yourself as a "star".
I actually shot with a girl that was between 30 and a Wal Mart greeter that conceded that the only reaon she was shooting was to charge more for escorting, nice.