Lately Christina Aguilera has been flat-ironing her hair so straight we half-way suspect it might be a wig. Sure, she can pull off pretty much any look, but our favorite is still the big, tumbling waves that, along with red-red lips, were the signature look for her retro period.

It's an easy hairstyle to do at home, just a bit time consuming. All you need: hair spray, a fine tooth comb and a good curling iron. In this Hair How To Video, Marlena from makeupgeek.com uses the gold plated Hot Tools Jumbo 1" Professional Spring Curling Iron.

The great thing about big waves is that they work with almost all hair lengths. As long as your hair is long enough to wrap around the barrel a couple of times, you can vamp it up like Xtina. Just add lipstick and go!