I don't see any problem with her bra – but that's mainly my opinion regarding fashion statements, I think
not showing is kinda tacky.
To me (again, fashionwise) changing that would be like saying "here, wear this long-sleeve shirt and knee socks with the very long skirt so you look respectful".
Only problem is her posture. Her back, and the way she's tilting her head forward.
My brain's screaming "lordosis, lordosis" like crazy when I look at it.