Ribbing's plenty stretchy, but leg pattern is definitely not. Frogged back to the ribbing, increased 8 sts/needle on next round - left end and ctr sts on each needle alone, kf/b in every other st for the rest. Knit next round even before starting pattern rounds. Changed "K 8" in pattern rows to "K 12".
Would really like to keep knitting but can't afford to sleep through work again tomorrow, so off to bed. (Not literally asleep, just very groggy and fuzzy-headed all day.) Sounds like kids are finally asleep so maybe I can actually get some rest tonight.