I like how people are constantly pointing out the elongated neck like it's a flaw. Well guys, since you think this is super-realism, why don't you say the eyes are too big too-- or the fact that there are no gaps in the teeth what-so-ever.
Seriously, I'm pretty sure she intentionally did it, like she did everything else.
If this is simple then I feel that saying something detailed is an understatement. I really like the lines. They trick my eyes a little bit, like I'm trying to look at some type of 3-D image without my glasses. Actually, I really like that effect. Really cute shirt by the way! If that were in a store, I would totally wear it.