I've been thinking of buying a proper suit few months from now and thus been doing a lot of research into buying proper fitting suits. I have tried different variations over the past few weeks and found a some that are to my liking and aren't that costly. I know for a fact that I want a 3-piece and slim fit suit. The thing is that lately I'm worrying, if I'm thinking too slim so I thought I'd ask for an opinion here. Anyway, here's the picture for better understanding: I like this suit the most at the moment, but do you think that the suit jacket is indeed too tight? I've had people say, that out of every suit I've tried so far, this one is the best looking but then again the people at the shop would say, that it is too tight and I should opt for a size up. Yes, I know that the "X" crease at the button indicates that a suit is too tight but other than that, the shoulders are fine, sleeves are fine and the vents are not opened etc. When trying a size larger, I don't really get the desired V effect that I'm after and I'd probably need alterations. Should I opt for a size up and let a tailor work the suit to my liking or should I just ignore the shopkeepers and go with it as is?