Round faces suit long hair.

Your longer hair draws the eye downwards and attention away from the wide part of the face.

A middle parting divides the face into two longer sides but can be difficult to wear.
 

If you have a round face and your styling a midi, go for different textures and wear it with attitude.

Avoiding a bob with a fringe, as showing off your forehead gives the illusion of a longer face.

Heavy layers around your chin will only accentuate width and roundness.