Does anyone know how they did Keshia Chante's hair in her one video?

in this video a href="http://www.youtube.com/watch?v=DD0eKzK1RJw&feature=related." rel="nofollow"http://www.youtube.com/watch?v=DD0eKzK1R…/a in the scene where shes wearing some big brown sweater thing that shows her stomach and she's just dancing standing up (3:41 / 4:00) . well i love how her hair is and i try to look closely at how its done but i cont really tell. does anyone know??