He may not but his tailor can. Extended shoulders and shoulder pads, it does give a pear effect right now.
Not everyone wants that, though. In any case, I think 1) is the biggest factor here.
1) Both his shoulders and hips are in the picture, so we can get a fair indication of their relative proportions, given that the camera angle seems quite neutral.
2) From the photo it seems the jacket fits well around his shoulders, but is too small around the hips, hence the very open quarters. So, going up in size might give a better balanced look.
Yes, we may have 'incomplete information' and I'm defintely not exercising a 'facility for certainty', merely stating an opinion based on the photographic material available.
Have a nice sunday, y'all