Several buttons too far actually. Not content with the decoration provided by his cuff, Yann Debelle de Montby of Berluti has five buttons on his jacket sleeve, and leaves three of them open. I think this crosses the line separating venial sins from mortal ones.
Aside from the unforgiveable, his look would be fairly classic. I can forgive the silver headed cane in a man who is obviously trying too hard and his combination of blue suit, white shirt and silver tie is one of my personal favorites - I wore a navy suit and silver blue twill necktie yesterday with a shirt that had a gray twill body and white collar and cuffs.
I wonder if he has met Snoop Dogg.