Seriously, how does this count as "impossible clothing?" Is there really someone out there so enraged at the possibility of a woman looking slightly curvy in any clothing that they claim something like this is "impossible?" Ugh.
It's impossible because a vest can't make that form on a breast, much less if there's actually a shirt in the middle. Same for the shirt itself.
Impossible clothing = normal clothing fitting like a tailor-made skintight latex catsuit.
Eh, but I've seen "a vest making that form on a breast". These types of clothes are usually pretty soft and stretchy etc etc. You can even make out the shape of the nip...