I'm a member of a group of local sewers (sewists, if you prefer). We got together initially because we all owned PatternMaster Boutique (PMB) a pattern-drafting computer program. We still do, and we even use it - but it turns out we're also somewhat omnivorous when it comes to patterns and all of us are on the lookout for good ideas most of the time. So when one of our membership showed us a simple drapey jacket that she had made, and when we all - different ages, sizes and builds - tried it…