Natural noon light from a large window with a single white diffusion layer.
Silver reflector adding a touch of highlight to camera left.
White reflector to light up shadow areas of the model's face to camera right.
Metered with an incident light meter.
Raw conversion via ACR.
Self retouch by photographer via PS.
Model's instagram @sanaevamodel
This is excellent!
Available light is best, in my opinion.
Mike