This trim is traditionally called Dentelle Rachel, which is a lycra trim with stretch but has one edge straight and one scalloped.
This delicate picot style trim can be used for lingerie and anything with a light stretch is needed. The total size is 1/2" and the lip is a little less than half of that.

It can be dyed to match your projects
This comes from a well know European brand Stephanoise
It is sold per yard