Jennifer Lopez just pulled the plug on her summer tour. Live Nation announced on Friday that the singer's entire This Is Me … Live Tour has been canceled, saying, "Jennifer is taking time off to be with her children, family and close friends." Lopez also shared the news with her fans via her On the Jlo newsletter. She wrote, "I am completely heartsick and devastated about letting you down. Please know that I wouldn' do this if I didn't feel that it was absolutely necessary."