Sleeveless Duster: Boohoo (similar here and here)
Dress (worn as top): Zara
Culottes: Monki (similar here and here)
Flats: Zara (similar here and here)

This look is one of my office go-tos at the moment; it's really easy to just throw on in the morning, it creates an interesting silhouette and the sleeveless duster adds just the right amount of smart and tailored (plus it breaks up my uniform of all-black). I've been wearing this duster so much since it arrived - it goes with pretty much everything and always gives my outfits that little something extra (at £20, you can't really go wrong!)