I am not sure if I have a twin, but here goes:
I am a pear shape..tiny shoulders where straps never stay up. Smallish chest, super long-waisted, with a small waist and large hips. Finding pants and jeans that fit my hips/behind/thighs and do not gap at the waist is a forever challenge, which is why I live in skirts in warmer weather! Add to that short legs, which also make pant length a challenge, and size 8 wide feet.
I'm in the process of getting back to my goal weight, so instead of numbers, I'll do sizes for now...for blouses, sweaters, jackets, and A-line style dresses/skirts, size 4-6. Pants and fitted skirts are 8-10.
One trick I've learned is to find tops with collars or necklines that balance the hips. Bateau/boatneck T-shirts, portrait collars, "fair isle" designs on sweaters, some cowl necks...all do a great job of balancing shoulders and hips.
If any pear shapes have suggestions for brands of pants that fit, please let me know!