This is so weried im thin cause im tall but in vids pics and mirrors my body looks big!!!!!?

wtf i no for a fact my body is thin and skeletal cause im tall 6 footer and alought of people comment how thin i am and im not anorexic or have any eating disoders cause i weigh 170 this is what kills me mirrors videos and pictures is not showing my thin skeletal body!!!!!!!!!! cause my body looks fat or big in mirrors pics and videos whats going on here!!!!!!!!! does this happen to anyone else? cause my problem i think isnt normal and im not talking about funhouse mirrors im talking about normal mirrors so how ami suppse to no if i gain weight when pics videos and mirrors are lying!!!!!!!!