I have a friend who was a competition gymnast (Olympic-class prior to a blown knee) when she was younger and so I asked (I thought that picture was a fake at first).
I was told that's quite possible but that one is exceptional by any standard. The girl in the picture should be able to do that for a few years into her 20s as long as she never quits. One kid, an injury - anything that makes you miss stretching daily - and that's it. The girl must have had a lot of gymnastics or acrobatics training when she was younger, and is still working with experts to keep it up.
(is gymnastics the only field where the girls are considered over-the-hill even younger than in porn?)
To grab your ankles backwards is not so rare for the younger oriental girls but to touch ankles to shoulders is something else.
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"If they can't picture me with a knife, forcing them to strip in an alley, I don't want any part of it. It's humiliating." - windsock