The Andy Griffith Show S07 E05 Aunt Bee's Crowning Glory

"Nip it in the bud!"

When a dignified-looking older preacher comes to town, all the older women want to impress him. Aunt Bee, after someone suggests it, buys a wig--a short blonde one. Later the preacher gives a sermon about having no pretenses. Aunt Bee finally tells the preacher about her wig.