Sienna Miller very rarely gets it wrong in the style stakes, and her fashionable flair has inspired our love for the boiler suit.
The mother-of-one was spotted running errands in New York, her home at the moment, looking laidback in a red boiler suit.
The jumpsuit is an effortless look that's easy to through on in the warmer months.
Take tips from Sienna and pair yours with a pair of sandals, sunnies, a long-strapped bag and a chic ponytail for the perfect off-duty look.
Or dress it up with some killer heels, a clutch bag and a button-to-far undone.
We've picked out a few boiler suits that you can shop now and try out the trend yourself.