See Photos From Barbara Walters’ 10 Most Fascinating People Special (PHOTOS)

Katy's Hair Evolution!
All of Katy Perry's hair 'dos.
It’s that time of year again!

This Wednesday, Barbara Walters will unveil her list of the 10 Most Fascinating People of 2011, a list that includes everyone from a reality show judge (Simon Cowell), to a pop superstar (Katy Perry) to the year’s most famous sibling (Pippa Middleton).

But who is number one? You’ll have to find out when the special airs Wednesday at 9:30PM ET on ABC.

In the meantime, get a preview of the list in our gallery now!