When people wear the same clothing as me though I normally just laugh, check them out and go "Damn you look good but personally I'm going to say it suits me better!" Normally with my friends this will result in a few minutes joking around about who looks better. With those I don't know well or don't know me they tend to get really offended but that's their problem for going out buying the same clothes as me and wearing them to the same places as me.