Taylor Swift is thrilled her boyfriend, Travis Kelce, joined her onstage during the Sunday, June 23, Eras Tour concert! “Wembley Stadium round one was so surreal. Looking out into crowds of 90,000 fans each night and hearing that VOLUME… Those were some of the loudest crowds I’ve ever heard. Acoustic sections went OFF. I got to sing ‘Castles Crumbling’ with @yelyahwilliams for the first time – hadn’t performed with her since 2011 and man my heart was just so full of love for her and our friendship. Then the impossibly gifted and wonderful @gracieabrams came and surprised the crowd with the fir…