If you spotted a "stitch line" along the waist then it shoudn't be too much of a problem to get it altered following this line or along the back zip maybe.
It really depends on how much "sag" you have really... if it's a little it's fine because the "slimmed" parts won't be seen ,& be smooth & hidden. If there's a lot it could look bulky especially if the dress is really fitted...
Don't know if I was very clear...sorry if not :s (english isn't my native language LOL)
thanks for the advice. I'll head over to a seamstress this week. I dont think its so saggy that it could be bulky if restitched. It just doesnt look tight or pin upy enough in that area. bust and hips fit perfectly! Oh if only clothes shopping was easy :)
well if they can ajust something to someones bust then they can surely do something about fitting this dress to my wittled middle.