I would also wear it unbuttoned over a v -
neck tee tucked into skinny jeans to function as a light jacket / outer layer.
Not exact matches
Think a white crew
neck tee, a silk button - down shirt, a striped
tee, or a plain slouchy jumper,
tucked in at the front, but casually so.
Pick a simple v -
neck tee (I like the one pictured from shopbop.com Bop Basics for $ 35,
tuck it in with a substantial leather belt (try Gap's Jean Belt in brown for $ 24) and some walkable but cool shoes, like the Birkenstock Gizehs in Cortina Green Chain Leather for $ 140 (they also have less embellished options that are cheaper).
V -
neck tee is
tucked in ripped blue BF jeans.