Janet Jackson is the one who started the trend with the poetic justice braids. She wore them in a movie she stared in which was actually called Poetic Justice. She inspired everyone that they will look good with them as well. Without her wearing them in the movie I'm not sure if anyone would have known about poetic justice braids.
She even got other celebrities rocking these braids. Here is Brandy, Christina Millian, Beyonce and her sister Solange wearing these thick braids.
You can do it yourself
Poetic justice braids are so easy to do that you can do it yourself.
Usually people will get this hair which is the X-Pression hair or the 100% Kanekalon braiding hair, but you can get whatever hair that fits your price range because you have to make sure you get enough hair to cover your entire head. Once you make your part and get the hair connected to your hair you can make the braids as long as you want. You can keep pulling the hair to stretch it out longer or you can just leave it at the length that is already in the pack.
Medium and large are the two most common sizes women get when they get the poetic justice braids.