I've read a few reviews on here lately about tailors in Patong - not all terribly flattering. Thought I'd better add a positive report about a tailor we used in January. We used Guiliano's on the corner of the beach Rd and Thanon Sawatdirak. The service was fantastic (particularly Sonny). We had men's and women's suits, shirts, dresses, etc made. The price was more than we paid in Vietnam but I think the quality was better. The process took a few days with several fittings (unlike the 24 hours in Hoi An).
We'll be going back there in January, 2011.