We're back Stateside today with one of my favorite people, Katie from Kadiddlehopper. As well as being a hugely knowledgeable and super-prolific sewer for her entire family, she's also a qualified paediatrician so she gets bombarded with my 'OMG Armhole' and 'Name That Rash' questions. If she minds she hides it well, but I'm pretty sure she has heroic levels of kindness and helpfulness. She recently co-hosted the Swim-Along series, which is the go-to place for all things swimwear- fabric and notion resources, pattern round-ups and loads and loads of process tutorials. Katie is also blogging about her Big Four Experiment, posting the results of sewing the Big 4 pattern companies based on their own size guidelines and instructions versus the results of by choosing a size based on high bust and sewing as per her own best-practise. I'm not being facetious when I say it's fascinating.