Serena Williams says her 7-year-old daughter, Olympia, fangirls over Taylor Swift rather than Disney princesses. While interviewing Williams, 42, at the INBOUND conference on Thursday, September 19, journalist Kara Swisher asked the retired tennis great if Olympia was interested in Frozen. “She’s not into princesses, she’s into Taylor Swift,” Williams said, adding, “I am, too.” Williams shares Olympia and daughter …