From Alice & Co Patterns:
The Intrepid Boiler Suit is a top-to-toe cover-up that can be made as practical or glamorous as your heart desires! The design features a shoulder yoke, classic shirt collar and slightly tapered leg. The suit fastens with a zip down the centre-front, whilst the waistband casing allows you to cinch in the waist with a belt. You can certainly do more than fix the boiler in this suit... and we guarantee once you have this on you won't want to wear anything else!
FIT
Loose-fitting but not baggy. There is a seam around the waist to allow for adjustments to the length of the body - vital for ensuring you can sit down comfortably!VARIATIONS
Add as many pockets as you like! Shorten or omit the sleeves for a pinafore version. Once you have the right length in the body you can join the pieces and cut in one for a more stream-lined look. Experiment with fancy top stitching or flat-felled seams for full industrial chic.