Natalie Portman (29) at the 2011 Palm Springs International Film Festival Awards Gala. This is a new tight bun. It has a cute big knot that suits her age and a tight structure that is appropriate at a very formal event. It may be too conservative for a prom.
Wendie Malick (60) starts the new year with a classic bob hairstyle which curls in sharply at the ends. In her naturally very dark brown hair she has lots of moderate highlights. The length is cut to mid-way between her chin and shoulders. It's a very simple low-maintenance style for women over 40. It's very flattering for her face.
Diane Warren (54) has a short haircut not unlike Liza Minnelli's. It very dark if not actually black. But her bangs are fuller, more choppy and asymmetrical. The top profile is a little shorter than you might expect.