Tim McGraw is celebrating his 54th birthday with his biggest fan by his side — fellow country star Faith Hill. The 53-year-old singer took to Instagram on May 1 to share a tribute to the “Humble and Kind” singer, posting a throwback photo of the couple. “Happy Birthday to my man, my one and only. I love you,” she captioned the sweet photo, which showed the pair kissing while Faith wrapped her legs around her hubby.