Well the good news is that her stretchiness retracts nicely so that's always a good perk! Plus, always a neat way to show off to someone who doesn't know about her stretchiness heh.

I think you did a nice job on this pic. I think you actually captured a nice level of stretchiness demonstration in this with what she's showing off with her neck. It doesn't feel excessive (where it can look really odd), but it's enough to really let her show off that fact. Also, it's nice that you got both sides symmetrical in shape, length and size, as well as just having marks equally present on both ends, like that stretch mark on the lower part of them. It's also nice that you have her being fun with it, which her expression does compliment at least. Kind of makes it a teasing feel as if bragging about this.

Nice job here ^^

Hah! I did not know that; cute!

Cute. ^^

Does she have stretchy limbs too? :3

She's full on stretchy.

Can i see a bit of her legs, if she let me? :v