Victoria’s Secret has a nice selection of figure flattering yoga pants.
Plus Size
A Big Attitude – assorted pants selections in plus sizes. Sizes 0X through 6X.
Avenue.com – The last time I checked they had a couple of styles of yoga pants in larger sizes, also in petite and tall size options.
Always for Me – bootleg pants, in black and navy. Plus sizes 1X through 6X.
LILA+ a good selection of yoga apparel for sizes 16-24
Old Navy Plus Yoga Wear
For Men
Vickery – very trendy selection for yoga, pilates or just casual wear.
Some information found at Yoga Place