Coven of stitches

Refers to a group of dedicated seamstresses/seamstressers (tailors).

Like a gaggle of geese, or a clowder of kittens, our costume guild and fans wanted a phrase that would indicate a group of people who sew either on a project or privately.

The "coven" indicates a magical quality of this group to produce intricate fashions/costumes that are almost unworldly.

When I realized that the completion of my Elizabethan costumes were running late, I enlisted a coven of stitches to help me finish in time for the masquerade.