In this culture dominated bu mass media, the soft side of nude modeling is dominated by Playboy. Take a look for youself for your answer. 90% long. Unless you have absolutly great features, AND don't look good in long hair (or have only bad pictures of youself with long hair) you would be wiser to at least start of with your long hair until you become firmly established, with modeling in areas outside of the nude also, before taking the risk of giong short ( jaw lenght or shorter). Shoulder lenght is the borderline of what is really considered long. If you do start off with short hair, then you risk a shorter modeling carrier, less versitility (the option of changing hair styles and color to look different and less initial draw (American boys want long haired girls for the most part). L like short hair on women, but I am mature enought to tell the truth.