If you have any confusion at all about whether or not this is OK, just ask yourself what stage direction this little girl received from an adult professional in order to get this shot
Also French culture seems different to me; in France it's common to let kids be naked much more than in the US; I get the impression they culturally don't view child bodies as that sexual to begin with
I can guarantee you that even with more lax attitudes toward nudity (which is not the point here BTW, it's the sexual stance), it's not ok at all to have this kind of sexual expressiveness here for a child. It's not representative and not normal.