Reminiscent of iconic classics, the halfmoon 101 JEANS are lower-rise, straight leg and designed for a non-stretch (selvedge) denim. Designed to be snug around the hips and upper thighs, the halfmoon 101’s will curve nicely around your waist and hug your hips before straightening out from just above the knee toward the ankle. There is an option for zipper or concealed button fly and the instructions will walk you through flat-felling the seams to create a simple look with a truly individual fit.

This pattern is drafted for approximately a 168cm (5’6”) female body, with a full hip ranging from 86cm to 170cm (33¾” to 67”). Step-by-step instructions are fully illustrated for sewing with a standard sewing machine and/or serger.

18 sizes, approx. US size 0 to 36W
halfmoon ATELIER 
patterns do not follow standard sizing charts, but newer patterns, including the 101 JEANS, range from a full hip of 86cm to 170cm (33.75" to 67"). They are numbered 1 to 18, but correspond approximately to US 0 to 36W.

Please note that the size chart here lists pattern-relevant measurements for every other size simply to keep the numbers visible. However, measurements for all sizes are included in the pattern instructions, and can also be viewed here

Denim: Non-stretch medium to heavy-weight (9-10oz.) denim twill fabric. The straight side seam makes this pattern perfect for selvedge denim. Suggested fabric quantities are based non-directional, non-selvedge denim.

Lining: Light to mid-weight woven cotton, cotton lawn or linen for pocket
bags, fly shield and waistband lining.

(See image for size and view specific fabric + notions requirements)

◊ view A: jeans zipper 12-18 cm (4”-6”) long + 17mm button
◊ view B: 2 to 4 15mm jeans buttons + 17mm button
◊ fusible mid-weight interfacing for wovens
◊ coordinating thread + (optional) topstitching thread
◊ 6-10 rivets (optional)
◊ jeans sewing machine needles (single + twin recommended)


Once the Purchase is complete you will receive an email with the links to download the pattern and instructions

You will receive the A4 Pattern and Instructions as 1 file and the A0 Print shop File as a separate file.

My name is Meghann Halfmoon. I am the designer and creator behind the sewing pattern label HALFMOON ATELIER. I believe that simple design and simple choices can have a big impact: on the way we feel, on the way we live and on the world! However, choosing fashionable, socially conscious products is still harder than it should be. I can help make it easier.

Well-made foundation pieces help simplify our lives. We need less, but they add more to our closet and leave us feeling polished and put together for all occasions. We can also have a positive influence on the world by choosing to sew with sustainably and ethically made fabrics. By using ethically sourced fabric, we are helping the people – mainly women – who create our textiles. It’s just a drop in the bucket, but that bucket is full of millions of little drops.

My mission is to design simple, unique sewing patterns and facilitate sewists to source sustainable, ethical, organic and fair trade fabric as a small step toward my vision of a world in which sustainable, ethical production is simply standard.

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