Faith Hill hated not being able to shave her armpits for months. The 54-year-old singer was told not to shave before shooting ‘1883’ – the ‘Yellowstone’ prequel miniseries – but Faith hated the experience. The country music star – who is married to singer Tim McGraw – shared: “That was really difficult, and Taylor [Sheridan, the series creator] actually called my husband. We were at a wedding, our nephew’s wedding, and he said, ‘Who’s gonna be the one to tell your wife that she has to stop shaving under her arms?’ “And I’m thinking, ‘What? We’re at a wedding. Can this wait?’ He goes, ‘No, stop…