If gentlemen really prefer blondes, then Christina Aguilera would be their ultimate fantasy. The Dirrty girl tops this year's In Touch Weekly Hottest Hollywood Blonde list.

The rest of the list includes Reese Witherspoon, Kate Hudson, Hayden Panettiere, Pamela Anderson, Gwyneth Paltrow, Scarlett Johansson, Paris Hilton, Heidi Klum, and Gwen Stefani.