They see the fit models in fabletics clothes and think "hey, I could look awesome like that, I just need some fabletics yoga pants" but then they realise they don't make them in size 900 and assume it's a conspiracy to stop 'fat babes' from looking hot. Skinny girls are hoarding all the yoga pants for themselves so only they can look hot. They fail to realise that the outfit is smoking hot because of the fit chick wearing it. The fit chick isn't hot because of the yoga pants, she'd still be hot in a burlap sack. They don't realise that looking that good involves anything more than copying the outfit.