Welcome, Charlie.
One can get colors like this either with warm lighting, or using an appropriate image editor, or using a combination of both techniques.
Since the image was originally posted on Instagram, I think it's pretty likely that the photographer used one of the Instagram filters, but it's difficult to be absolutely certain of this.
What is clear is that beyond the issue of the color, the lighting is extremely important to this photo. It is what is sometimes called soft, wrap-around lighting. It could be coming from some large area, soft natural light source like a window (probably with curtains), but my guess is that the lighting came from a large softbox (on viewer's right) plus a large reflector (on viewer's left). Usually one can tell something about the lighting from the reflections in the eye of the subject, but in this case, the image is so small, I can't see the reflection clearly.
HTH,
Tom M