Is Serena Williams Losing Her Hair?

Is Serena Williams going bald?

That's what the Daily Mail asked after the 30-year-old tennis superstar stepped out of an L.A. nightspot last night with a visible bald spot in the middle of her head. The British paper suggested that Williams may be suffering from traction alopecia, a form or hair loss caused by wearing weaves and extensions.

Williams wouldn't be the first be-weaved celebrity who's had to deal with hair loss from traction alopecia. Naomi Campbell made news when she showed off bald patches around her head. Paris Hilton, Victoria Beckham, Britney Spears and Alexandra Burke are all reported to have suffered from it as well.

"It is very common in people who wear braids and tight buns, as well as extensions," one hair transplant surgeon said. Experts say that the effects of traction alopecia can be reversed if caught early enough.

For a look at Serena's tonsorial history, check out her style evolution.