⇧ Love the combination of textures, colors and patterns - well done.
If those buttons matched (I like the leather), the vest had one more, and the suit coat had a vestigial third button, this would be the star in a TNSIL wardrobe.
Exceptional! Couldn't be better.
This is a good example of something I mentioned in an earlier post -- how the same broad hue, in this case an oatmeal colour, can be used with different textures and patterns in the components (vest, jacket, tie) to create a fine overall effect. Some of the other ensembles above are also good illustrations of this principle.