I don't have the best eye for fit, but it seems to be about as tight as possible without pulling. It may look dated in a few years, but I'd say it's alright as long as you're comfortable in it.

 

There does not appear to be any tugging or pulling of the material so to the outsider, it does not scream of tightness.

It does come across as a very tapered and slimming look however. I like the cloth pattern and I think overall the suit looks good.

 

Just out of interest (in case I pull the trigger on ebay) did you go up a size on jacket and pants or did you choose your normal size ?

 

Trousers are out of balance. The back of the trousers needs to be dropped a considerable amount.
Note how the jacket's rear vents are pulling completely open. It is too tight there.
Note how your lower front button is also pulling open. Needs more room in the front waist.

 

Just as a completely irrelevant aside ... I recently had the displeasure of trying to assist one of my clients with the fit of a Kiton suit. It was one of their signature $30,000 bespoke jobs.

Although I have seen many poorly fitted, overly costly suits during my career, I do have a memorable "top five worst". This one was certainly in that memorable bunch. If price were considered in the equation, it might well have attained the top spot.

 

I agree with Kabbaz about the balance of the trousers, but other than that, for an ebay purchase I think it looks fantastic!

A lot of that tightness you are feeling is how Neapolitans make their garments, extremely light fabrics and internals to allow a close fit and a so-called 'second skin' sensation to wearing the suit

 

In my experience, Kiton shoulders are typically wider than normal, and chest measurements are a tad smaller. This is in comparison to a Brioni purchased new. For Brioni, a size 40 = 43" chest, 42 = 44-45" chest; Kiton, I've only had experience with Italian size 52, which really isn't a US 42, but closer to a US 41. Kiton 52 = 43" chest on one jacket, and 44" on another. Go figure.

 

Aside from the few alterations suggested - the suit looks great. Would you mind telling us what you paid for this steal, so that we can sit here and be jealous. Was it new or used? I've been tempted to buy some pre-worn suits on ebay but I'm worried about getting a garment that has suffered wear and tear.

 

And it doesn't look tight at all - it simply looks like it fits you.

Oh, and if you start doing bench presses and build some muscle then you've got a good problem - you get to go buy another suit.

 

Looks great, enjoy.