How much will 8cm change my look ? Will my shoulders look worse?

I am grateful that i have been lucky to be born with very very wide shoulders and body with 0 gym, after 8cm will I look bad or still wide just not as wide as I was.. a lot of people complimented me on this and I dont want to lose it, do you think 8cm will still be in place ?

Can someone send a link from a serious research that has the average , skull/arm/leg/shoulder size of a 188 or 190cm person ?