There really must be something in the water she's drinking, because Carrie Underwood's beautiful legs are something of pure magic. If it's not sorcery, it might have something to do with her personal trainer, Erin Oprea, who keeps her legs looking hard via different variations of lunges. Want a leg-sculpting workout worthy of Carrie's training program (complete with lunges)? Try these sexy-legs moves.

Kim is known for her booty, Kylie for her lips, Kourtney for her banging post-baby bod and Khloe for her total body transformation -- but supermodel sister, Kendall Jenner? She's known for her modelesque build and long, lean legs. Considering that she's walked in the Victoria's Secret fashion show more than once, it's safe to say she is total #leggoals.

If there was ever someone to have total leg envy over, it's Blake Lively. Genetically, the sporty celeb was born to rock high heels, miniskirts and short dresses, and those of us wishing we had her naturally muscular build hate her for it (not really, we love you, Blake).

Want Rihanna's beautiful legs? Then you better work, work, work, work, work (sorry, had to). In fact, her legs are so coveted that Gillette insured them for $1 million in 2007, after naming her "Celebrity Legs of a Goddess."

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Every time we look at Jennifer Aniston's banging body we have to remind ourselves she's 47. Like, how? Her covet-worthy legs are one of her star features, and you can thank yoga for your leg envy. Aniston does sun salutations and frequently practices moves like tree and mountain pose. Curious to try it for yourself? Sculpt your legs and your booty with these butt-firming yoga poses.