This is absolutely gorgeous.  It’s a tile bas-relief of three nude children playing in a waterfall by French art nouveau sculptor Constant Ambroise Roux.  Of course, we are most interested in the topmost figure, the sole female in this trio of tots.

Constant Ambroise Roux – L’eau (Water) (1904)

Constant Ambroise Roux – L’eau (1904) (detail)