Photo: Serena Williams Flaunts Her ASSets, ZIPS Over To “David Letterman “

Sexy tennis goddess Serena Williams was out and about looking red hot in an exposed back zipper dress. She was said to have been hitting up the  “The Late Night Show by David Letterman” in New York City.

In a back zipped dress and new black Louboutin pumps, the tennis pro made her way to a taping of “Letterman” earlier yesterday.