On the one hand, take a classic blazer in flat colour with button front and V-neck with lapels. On the other hand, take a trucker type jean jacket with washed/worn effect… What happens if you cut them in half diagonally and you sew both parts together? You'll get a garment as fun as this one.
V-neck with lapels
Metal button fasteners
Bimaterial garment, half blazer and half trucker type denim
Washed/worn in jean fabric