Love these guys! So the hair at Herve Leger is inspired by a horse's tail--super blunt, thick and shiny. To get the look, just scrape your hair back using your fingers--it's supposed to be quite rough--then secure with an elastic.
If you're being literal, attach a blunt hair extension around your natural ponytail using another elastic, then wrap with a leather strap. I love the look, but it could go Real Housewives very quickly if paired with the wrong clothes. What do you think?