I used to buy bras in Fethiye, it is near to Paspatur a side road off the oneway system (on the left, sorry my sense of direction is shot to pieces!), I think Fortis bank was on the corner, the side road leads up to the Fish market.
Stock carried is Triumph contessa etc. I suggest you measure yourself as their measure service is not very good.
Just found it on street map, sokak 96