Olivia Wilde's recent trip to New York with her appearance on "The David Letterman Show" this week showed off her new hair color plus soft sensuous waves. Celebrity hairstylist David Babaii created this look and is now unveiling his styling tips for achieving Olivia's summer beach waves.

According to David, "All great hairstyles begin from within, so I am a huge advocate for both men and women taking high quality vitamins and/or supplements like Viviscal to give your hair the necessary strength and nutrition it needs to look amazing."

1. To maintain your hair color during the summer, I recommend IT&LY HAIRFASHION's Advanced Color Protection System.

2. Next, I applied a small amount of my David Babaii Miracle Oil for shine.

3. After rough drying her hair to create natural lift and volume into the hair, I created a side part and took large sections, spraying each one with Texture Spray for hold and wrapped them around the inside of a large barrel curling iron. For more natural looking waves, I alternated the direction of each section.

4. To finish, I took the fringe and top area lightly twisting and lifting for a modern day 40's roll and securing with a large bobby pin. For added hold, I sprayed IT&LY Pure Definition Hairspray.