I have a few up and coming semi efamous insta friends and the one thing they all have in common is looking pretty. They're all very attractive and constantly getting modeling gigs and what not. What >>1991
said is pretty much how they got popular. Good looks (IMO) is one of the best ways to get noticed. That or having a good personality, special talent, or hanging around famous people, could help you get noticed some how. Being active online also helps.