Isabel Marant Étoile's 'Harmon' jacket offers two different, yet equally cool, styling options - unfasten the concealed shoulder snaps to remove the sleeves and wear it as a vest. It's cut from sturdy acid-wash denim for an '80s feel and has an oversized fit. Double up your denim with the label’s shorts and layer it over a T-shirt.

Shown here with: Velvet by Graham & Spencer tee, Isabel Marant Etoile skirt and Veja trainers