It's a keeper!
I'd been eyeing this dress for a while, wondering if it could work for me. i wound up ordering the sp size when it went on sale. its pretty perfect-i am 5'4' and currently 130 lbs. it fits well, if a touch loose in the waist, but i think if i had purchased the xsp it might be too snug through the bust, as it's fairly fitted there. the neckline comes a little lower than i usually wear, which is part of why i wanted to order the petite size rather than the regular (that and the length), but i can