Was sewing one of the selection criteria? Are you messing with these employment agencies and applying for jobs as a seamstress then having a giggle about not knowing how to sew during the interview? Wicked! (as in funny, cool, rather than naughty, etc.)
Or did she want you to sow grain?
In the terry pratchett books, seamstress is euphemism for hooker. Maybe it wasn't a uniform shop at all. Maybe it was a front for a brothel!phewI may have had a lucky escape, ey?I sowed my oats long ago.