I think this was suggested in another thread so I'm just going to go ahead and start it. I hope that others will add to this, and this will be stickied.

I'm a pretty TTS 26.

-BKK Crystal A's, size 27, 98/2% blend: run tts (too big for me), run large in the waist, tight in the thighs
-Dojo Grommets, size 27, 100% cotton: run about 1/2 size too small (just a bit loose for me), run tight in the hips and upper thigh, waist is pretty tts
-DHV Studded A's, size 26, 100% cotton: run tts (at least my pair), run smallish in the waist and tts everywhere else

That's all I currently have, but here are things I used to own but have sold/traded away:

-NYD Tricolor A's, size 26, 98/2% blend: run tts but smallish in the thighs and hips
-Catalina flare miniskirt, size 27,98/2% blend: runs tts but sits high on the waist if you don't size up
-Ireland Tricolor Crop A's, size 26, 98/2% blend: runs small about 1/2 size but will stretch over the course of the day
-Bombay A's, size 27, 100% cotton: fits 1 full size small, runs 1 size big in the waist and 1/2 size small in the upper thighs, tts in the hips.
-St. Tropez Flynts, size 27, 98/2% blend: run tts in the waist, but run 1/2 size small in the hips and thighs
-Medium New York bootcuts, size 27, 98/2% blend: run 1/2 size small everywhere except the waist which runs tts
-Milwaukee Mia's, size 26, 98/2% blend: run 1/2 size small everywhere, especially in the thighs and hips
-Nakita bootcuts, size 26, 98/2% blend: run tts everywhere, extremely stretchy but one of the softest washes in SFAM
-Vancouver Crystal A's, size 26, 98/2% blend: run a tad small everywhere but stretch out to be tts after wearing
-Vienna Cactus Flynts, size 27, 98/2% blend: run a full size small in the hips and 1/2 a size in the thighs, waist is tts
-Aruba A's, size 27, 100% cotton: one full size small everywhere, very thin denim that is prone to getting worn spots around seams

Hope that helps!