Sponsors. start buying from popular brands and also niche brands that are slowly growing. Take nice photos in their stuff, tag them on IG whenever you post yourself wearing their stuff. If you get enough of a following then companies will start to sponsor you and also pay you to take photos in their stuff. Some of them also give you additional pay through giving you a private link that you share to their website. Its sometimes a discount link. The more people use your link the more money you get from them.