Not sure how to wear denim shirts with jeans? Try a grey denim top like this one by Levi’s with grey jeans for a monochrome denim look.
Jeans are Levi’s. For a lower rise, try these. I also love these R13 frayed jeans.
Shirt is the Classic Tailored Western Shirt by Levi’s. Grey appears to be sold out everywhere, but this black version is similar or you can try this chambray version, which is also very similar.
Sneakers are Chuck Taylor’s by Converse.
Sunglasses are Tory Burch.