Taylor Swift and her parents reportedly celebrated Christmas with her boyfriend Travis Kelce and his dad. The 34-year-old singer’s relationship Kansas City Chiefs player Travis, also 34, hit the headlines when she watched him play from the stands at The Arrowhead Stadium in September next to Travis’ mum Donna, 71, while wearing a red-and-white Chiefs jersey. Insiders have now told the Daily Mail the ‘Bad Blood’ singer and her parents celebrated the holiday at the tight end’s house with his dad in Kansas City. A source said: “Seeing their families together on such a special holiday was the best…