Each season, you'll earn season points that will count towards reward tiers. Season points will be awarded for every photoshoot you participate in. You get more for getting better results and you'll move up through the tiers based on how many points you collect.
Your stars indicate which tier you're in, and your points will show how close you are to the next tier. You can expect your rewards to get better as you move up through the tiers, particularly for the fashionistas who make it into the top 100!
Once a season ends, your rewards will be sent to your inbox (within a day or two) and a new season will start shortly afterwards.