That could’ve been me
This girl is definitely staring at her friend with an envious look, and it seems like she’s thinking, “this could’ve been me – why didn’t I wear a tank top?” That’s one way to get attention, but it’s not necessarily the kind of attention you want. We’re wondering if the girl next to her feels at all uncomfortable with the way her friend is so blatantly staring at her.
Perhaps she was just trying to read what’s written on her tank top? If you’re going to wear a revealing tank top like that, the first and most basic rule is there shouldn’t be anything written on it, since it would just give people an excuse to stare.