What Do You Think of These Stars' Hairstyle Changes?

After Good Hair came out, Nia's own locks have been getting shorter and shorter. At a recent screening, she had a cute piecey bob, but by the time she arrived on the red carpet for the This Is It premiere, she was rocking a cute pixie that might be her own hair. Ms. Long is a great beauty no matter what kind of hair she has, but which style do you think does the most good for her look?