Can't sew anything to this dress, and don't need to; it's "competition fit" - i.e. skin tight - and you could tell if she had a bandaid underneath it
; late teenaged years - and - well - neatly and nicely endowed (B to C cup, depending). Our dressmaker always builds support into the front of the dress such that we don't need anything else ... it's essentially a built-in bra, and it works well, it's totally invisible and doesn't distort the line of the dress at all - we just will put a dance bra underneath sometimes just to put a bit of extra support/security, and for comfort level in terms of changing in the dressing room (modesty).
I do handwork - stoning, etc - don't have access to a sewing machine, or anything of that ilk. I'm going to have to go with a purchased solution ... I woudn't be able to pin the tights to the dress, as the skirt is silk chiffon, and the body is satin with minimal stretch; you'd also be able to see the pins through it, and I'd worry about tearing. I may see if I can hit up Victoria's secret or something for pair of flesh toned knickers that I could pull OVER the tights to cover the waistband ... I think they might have something like that ...