The aesthetic of someone who keeps up with micro trends and buys trendy clothes off SHEIN or other fast fashion brands, usually people regret buying those clothes weeks or days later after realizing it isn't their style.
Person 1: "you see Brianna over there? She is definitely one of those sheincore girls, buying clothes to wear them once to fit in."
Person 2: "true, maybe she should find actual style, not just what's popular"
Person 2: "true, maybe she should find actual style, not just what's popular"