Hi. I am thinking about making a stretch tutu for my daughter and have been looking at the Dani Legge patterns. I just wondered what stitch you use for the top stitching on the bodice seams. From photos I have looked at of stretch tutus that have this top stitching, the stitches look like a straight stitch but I don't think they can be as they wouldn't stretch. My sewing machine does have a specific stretch stitch, looks a bit like a lightening bolt, but after doing some experimenting this doesn't look nice as a top stitch.
Any advice would be gratefully received!