This is a topic that has come up numerous times on the forum, but generally speaking, new suit buyers aren't happy with the outcome. I doubt you truly know what you want/can effecitvely articulate it to a tailor. Simply going to a tailor and saying "make a suit like Tom Ford" probably won't have great results.
I have just started getting into made to measure, and even using rtw suits that I like as a model, haven't resulted as nicely as I would like. Some of that is my fault, some of it the tailor's.
If you like Zegna, get a Zegna suit for $2-3k, and be done with it.
Also, you haven't elaborated. Is this a very formal wedding? What time of day?
I completely disagree with this. You don't need to be a clothing expert to buy bespoke just like you don't need to be a watch expert to buy a Rolex or a great amateur mechanic to buy a Ferrari. I think your problem is either your tailor isn't very good or you are trying to make him do things that he doesn't usually do. I wouldn't do it and I wouldn't make a suit like Tom ford, but if I was inclined I could talk to my buddy who used to be the director of TF Bespoke, I'd take a look at some of the suits, get my friend to look at the pattern I made, source the same trims and cloths if I could. I wouldn't do it not through lack of ability or resources but because I want people to buy my suits, not TF copies. So for me I would just say I'm not making it if I couldn't, or if I didn't feel comfortable making the garment. Your tailor probably needs to learn how to do this.
Going back to my original point, if you go to a good maker you really can't lose, unless you make it happen. I don't like being typecast but if you look at the suits I make then well, that's sort of what your suit is going to look like, it's not going to be some hipster suit, it's not going to look like it's from Anderson and Shepherd or Rubinacci. The key is to find a good maker and one that you like the look of their work. Do you like it? Would you wear clothes like that? Well ok, maybe you should order yourself one then. And that's pretty much it. A tailor isn't like a machine that you can program and if you do that well enough and comprehensively then you get a good result.....well in a way maybe they are, but that's a full time job, it's called being a fashion designer, which is very different from a client.
Edited by David Reeves - 10/29/13 at 4:31am