We Got Pics From SERENA WILLIAMS’ 1950s Theme’d BABY SHOWER . . . All The Celebs Dressed Up . . . Like They Were IN THE PLAY GREASE!! (PICS)

: Serena Williams is almost ready to pop, so she had her baby shower this past weekend. It was a 1950s theme. Her friends La La Anthony, Kelly Rowland and Ciara Wilson were there.