I was at JC Penney looking for Tint Jeans, which they no longer make.  I was VERY upset, and was browsing around the rest of the jeans, and found the Levi's 529 Curvy Boot Cut Jean - I gave them a whirl.  They are AMAZING - great fit, elongate my legs nicely, make my butt look good - and the best part: NO GAP at the back of the waist!!!  Huzzah!

One caveat, at least on the ones I found at JC Penney (and I checked multiple pairs): the dark wash ones ran about 1" longer in the inseam than the lighter wash, making the dark ones too long for me.