By Joseph McBride & Joseph McBride Taylor Swift received cheers and boos at the Allegiant Stadium, as she was spotted with Blake Lively on multiple occasions. Initially, the popstar received cheers during Post Malone’s live performance of “America the Beautiful”. This happened just after her boyfriend, Kansas City Chiefs player Travis Kelce, was seen looking emotional on the sidelines. But when she was shown later on downing a drink she received a mixture of both boos and cheers. Despite having flown all the way from Tokyo, Japan, Swift made it to the game on Sunday. Swift arrived at Allegiant…