Should i care what my friend thinks?

i saw my friend wear the brand RVCA and i loved the brand ever sense. i have bought T-shirts to a backpack. am i copying my friend by wearing RVCA? because one day one of my friends was wearing RVCA jeans and my friend who wears rvca said "oh wow now i have to find another brand to wear" but he said in a serious/joking around way. but i could tell he was kinda annoyed. so am i copying him? and should i find a different brand to wear? ive tried to find a new brand to wear but none of the brands ive seen have lived up to rvca (except for electric but tey only have like 4 shirts) i know i get annoyed when people copy me.