It's a bird, it's a plane, no it's a man bun! Check out a few of the hotties sporting this hot look in our man bun slideshow.

This is the hottest new hair trend to take over the ponytails of every guy with tresses long enough to rock one. Did you know that the man bun has become so popular that it's actually a trending topic on Twitter? There are even blogs solely dedicated to paying homage to the look. So what the heck is a man bun?

Turns out it's simply a messy bun for men. Guys get so little in the way of hairstyles that it's no wonder this 'do has become the next best thing since sliced bread for them. Consider this the testerone version of the top knot, positioned anywhere from on the very top of the head, down to nape of the neck.

"It's basically very easy, mainly for guys with long hair, that want to just put their hair back quickly and not too perfectly," said professional hairstylist Ric Pipino to FOX News. "It's like a messy bun, just thrown back with their hands and tied."

The look appears to be sweeping over Hollywood too. One Direction singer Harry Styles, soccer hottie David Beckham, and actors Leonardo DiCaprio and Jake Gyllenhaal have all been spotted getting their bun on. Could your guy be next?

When it comes to the man bun, any man with hair is game to try this trend. "The man bun is truly something everyone can wear," Ric said. "It doesn't have to necessarily be a downtown kind of thing, you don't have to be a biker to wear it. You could be a suit-and-tie kind of guy and like your hair a little longer. This actually works great for the day for business meetings," he explained.  "So it's a variation. It allows you to have a little change in you hair."

Easy to try, functional, and trendy, there's only one thing to remember about this look. The trick to the man bun is keeping it imperfect and a little messy. Once your guy has nailed that, consider him a trending topic!

What do you think of the man bun? Let us know with a note below!