last time i was at ikea none of the fabric was 100% cotton and i found it to be a slightly heavier weight than quilting cotton. i believe they design the fabric more for home dec applications since its typically 54-56 inches wide.

if you judge by their 100% cotton bedding, then i say no. the weave is very coarse and not tightly woven.

the only sewing fabric i see there now is decorator fabric. they used to have bolts of cotton, but not for a long time.

I've seen their fabric designs online, but, judging by Ikea, I think it would be very stiff fabric...more for cushions, drapes...other "heavy" items. I do want to get to an Ikea to see for myself though. Of course, the designs are mod. :)