Hadid hit a Bulgari event in Rome on Thursday in a slicked-back low bun and a severe zig-zag part, the likes of which you probably haven't seen since middle school, care of hairstylist Jennifer Yepez.

Hadid hit a Bulgari event in Rome on Thursday in a slicked-back low bun and a severe zig-zag part, the likes of which you probably haven't seen since middle school, care of hairstylist Jennifer Yepez.

Five minutes later and Polko was combing my strands into a zigzag hair part. After my hair was slicked down with gel ... “You can just pull it back into a pony and be like, ‘look, I tried.’” ...

Pro tip: create a zig-zag part on the sides to make hair appear fuller. For a sleek look, use a comb to section off a small portion of the ponytail, then follow with the flat iron.

If you love a good ponytail ... zigzag parts to create a middle section. Starting at the point of your hairline above the middle of your left eyebrow, draw a zigzag part with a rattail comb back ...