Shall I dare ask......:)

But I think I know the reason, it makes sense.

I've embroidered on the front and back of several onesies. I take out one side seam, I use a sticky stabilizer on the inside and a water soluable stabilizer on the top so the stitches don't sink into the knit, I rarely hoop anything that stretches. After I do the embroidery I remove as much as the sticky as possible and iron on a layer of the soft stabilizer so what touches the baby is soft.

I do my shirt designs upside down. To avoid conflict between the narrow neckline and the hoop/machine connection, I flip my design on the embroidery machine screen upside down and then I do the design by putting the hoop in at the shirt waist. I'm assuming the onesies can open wide on the bottom, so if you can flip your design upside down on your embroidery machine, you can do it that way.

There is a soft stabilizer on the market that I hear is very baby-skin friendly, but I can't remember what it's called; it should be available (and advertised as such) wherever a wide variety of ME stabilizers are sold.

Might be Sulky Tender Touch which you can get from Joanns. That's what I use.

Thanks for all the tips and suggestions.

I have done one so far, five more to go. :)

Hope you will post some pictures, I bet they are cute!