I LOVE to celeb-stalk (trends, of course!) and this is one of the best I've seen in quite awhile. Everyone has a pair of J Brand 901 denim leggings (aka jeggings) ($139-242). Hilary Duff (in olympia - see above, they're my fav!), Sofia Vergara (in sable), Miranda Cosgrove (in clear indigo) and Hayden Panettiere (in pitch). The 901s are J Brand's best-selling jean ev-er and def a huge celeb favorite. And if you haven't noticed, they look great with heels! Warning: These aren't for the faint of heart! They are suuuuper-skinny (doesn't necessarily mean you have to be, but pair it with a longer top half for the most flattering style, aka balance) with lots of Lycra stretch (which is a good thing for those of you who hate doing the "jean stretch" every morning - these already stretch!).
P.S. Shopping tip! I'm told they run pretty true to size, but are larger than they are small. A lot of people get them a size smaller so they're not constantly pulling them up and so they don't sag (not cool). (If you're like me? You never order a size smaller - eek.)
[Photo Courtesy J Brand]