Tennis in heels? That's what pro Serena Williams was up to Wednesday evening when she played a bit with David Letterman on the streets of NYC outside the Ed Sullivan Theater.

Naturally, the tennis champ is in town ahead of next week's U.S. Open, which will be held in nearby Forest Hills. Serena will enter the competition as the number one seed.

The 32-year-old showed off her rock hard abs in a black crop top with a white skirt with black pinstripes to match. She even put on a show with the racket while wearing a pair of black spike heels.

Despite having a difficult year, with four big losses (Australian Open, French Open, Dubai and Wimbledon), she's reportedly back in top form and is the current favorite to win the Open. If she does win it will be her 18th major championship.

Today's new photos also includes a few shots of Pamela Anderson, who recently filed for divorce from husband Rick Salomon. Pam was spotted with boxer Frank Zito leaving LA's fabled Chateau Marmont, and the pair had their arms around each other despite recent photos of Pam and Rick seemingly trying to work things out.

Click through for these photos and more, including Rihanna, sexy Italian models Laura Cremaschi and Claudia Romani, and Zac Efron on the set of his new movie, "We Are Your Friends."

As always, head over to Starpulse Photos to see thousands more photos.