Will T.R. Knight and Isaiah Washington return?

Forget that Grey's Anatomy gossip for now and let's focus on another issue facing Seattle Grace in the fall: Will Katherine Heigl be scrubbing in as brunette?

The actress that gets Knocled Up by Seth Rogen this summer has been hitting the town recently with darker locks than ever before. What do you think of the change?

Heigl, of course, isn't the first celebrity to mess with her own head. Beyonce likes to surprise fans with curly or straight styles from time to time.

The aforementioned Knight has even followed the pink lead of Joss Stone and Rachel McAdams recently. Guess that's the sort of knee-jerk reaction one has after failing an intern exam.

Finally, you might recall that Britney Spears shaved her head and then sported obvious hair extensions recently. That story may have made a few celebrity gossip headlines.