Another late poster! Hm, there are so many variables that I'm having trouble figuring out who might be my "twin." Breaking this down into general aspects of descriptions so that I can see who might match me in each of these areas:
Shape: between hourglass (figure 8) to inverted triangle (V)
muscular legs (both thighs and calves--this is the one reason that IT clothing recommendations don't work, as they assume thinner legs)
Measurements:
height: 5'3"
weight: usually between 127 and 130, but I think this is shifting more toward fat as I get older
bust: 34C
measurements: a few years ago I was 35-27-37, but I think I might have to add half an inch to them nowadays
sizes: almost always 6P in both tops and bottom at Ann Taylor and J Crew but on large side of 6P at some other retailers (e.g., Boden, BR), or small side of MP; 28-29 in jeans (29 for the thighs but they tend to bag around the rear view); 8W to 8.5M in shoes
Proportions: petite
round (as opposed to elliptical)
short neck
short arms
strong shoulders
The funny thing is I always thought I had short legs, which should mean that I have a long torso, but if I have short legs and yet am almost at the height limit of petite sizing, doesn't this imply that I should fit regular sizes on top? But no, I need petite sizing for both length (arms, legs, torso -- actually I still need arms shortened) and width (in the ribcage).
I can find height/weight twins, and height/shape twins, but not petite size/shape twins. A couple of the "anonymous" posters and ButterflyLady, may be close in terms of shape/proportions though; a couple of people are similar but slimmer (e.g., Sylvie, Ruth, Cinnamon Fern) -- I'll keep an eye out for all of your posts though. Thanks to the OP for starting this!