It’s called punk rock bbz, look it up

Black cotton crop shirt with chain detail Crop silhouette + short sleeve = layering magic Button-down fastening down centre-front Silver metal O-ring attaches bike chain trim (32cm) from chest pocket flap to collarstand Lobster clasp fixes chain to fabric tab on collar Let them talk, let them stare Non-stretch fabrication 100% cotton
Rhiannon is 5’6″ and is wearing a UK8.