if that's straight from the camera, you need to check your settings, or reset it. I think you must have your saturation up, if youre shooting jpg. If you were shooting RAW, there is something amiss with your lens or your camera or both. What did you use for white balance?

Check your settings and make sure your saturation is not turned up. when you shoot skin tones like hers, you have to be very careful because the skin already is warm and soft. . .