The bob haircut is many things — graphic, sexily jawline-skimming, totally in right now — but one thing it can't do is be made into a classic ponytail. The typically elastic-wrapped look is one of humble beginnings: We imagine that even when Eve was having a bad hair day, she'd rip a vine off the Tree of Good and Evil and whip her boob-length hair back into a swingy ponytail. But decades after (our imaginary) Bibilical times, the ponytail — usually reserved for high school babysitters or anyone who plays a sport — has recently popped up in more runway-worthy (Alexander Wang, Donna Karan) and red-carpet (Reese Witherspoon, Drew Barrymore) contexts. While we simply couldn't list everyone's best ponytails (don't worry, we'll highlight dudes with ponytails tomorrow), click through our slideshow to see some of the most famous heads to regularly go for the look — from the original Barbie and Blake Lively to SJP and Sarah Silverman. Then, of course, add your own outliers in the comments below.