This pattern is like the Kim Hargreaves “Mary” but reworked so as not to need Rowan Denim yarn which shrinks in length. This pattern fits without shrinking and so it is possible to get the look with other yarns.
Made with nearly 6 hanks of Rowan Creative Linen here.
Note that there is no waist shaping in my version.
There is a solution to stop the fronts flipping outwards, with a photo tutorial included for this.