If you click the source, you’ll see that the girl posing in the photo (littlekelsiebelle) is 22 years old, posts a lot of selfies of herself and is, yeah, pretty youthful looking. I’m pretty vigilant about this kind of stuff, but thank you for expressing concern. I’d rather not accidentally reblog a picture of a minor. But, as someone who is mistaken for a minor very frequently, I think I’m usually pretty good at distinguishing an actual young-in with someone who just looks youthful.
That said: Please, if you see a photo I’ve reblogged and you know it’s a minor, please let me know IMMEDIATELY so that I can delete it and report the source to Tumblr.