Cyrus' no-fuss side-swept ponytail makes any outfit look polished and pulled together. While the ponytail itself is down-to-earth and practical, the girly tendrils around her face create a glamorous effect. After securing curls into a ponytail, pull out a few face-framing pieces, apply a touch of styling gel (try Kiehl's Clean Hold Styling Gel, $15), and wrap the pieces around your finger to form them around your face.

Swift is "fearless" when it comes to experimenting with different hairstyles, and she gets it right with this side-swept updo. To get Swift's thick bun, run volumizing foam (try Ojon Conditioning Volumizing Foam, $22) through your hair with before blow drying, then curl the bottom half of your hair using a one-inch iron. Secure the curls into a low side pony, pulling the curls only half way through on your last wrap around. Pin any loose ends to perfect the shape.

Menounos' side-swept curls look strong enough to last all day, yet soft enough to touch. To get this look, curl your hair using a large barrel curling iron (you want big curls, not tight tendrils). Then sweep the mass of curls over one shoulder without separating them, and spritz with hairspray for hold (try John Frieda Luxurious Volume All Out Hold Hairspray, $5.99).

Theron's updo is the epitome of elegant. Loose curls create a soft, flowing effect when tucked to the side. To get this look, use hot rollers, then run your fingers through the curls to break them up. Pull your hair gently to the side of your head, and secure into place using clear elastic. The key to achieving the elegant finish is leaving the front tendrils loose and wavy.

A fun fishtail braid is always great to wear, and Willis adds a little flair by braiding it to the side. Secure hair into a loose low side pony (so you have hanging face-framing pieces) and separate it into two sections. Take a small piece from the outside of the right section and add it the left section. Then take a small piece from the outside of the left section and add it to the right. Repeat these steps until you reach the ends of your hair -- as you reach the ends angle the braid over your shoulder to help it stay put.