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"I wouldn't go out on the stage without my gowns for nothing," Lynn said, smiling. "They're heavy but, hey, work's not easy."
The country music legend, whose early life and career were dramatized in the 1980 movie Coal Miner's Daughter, is the subject of a PBS "American Masters" documentary, Loretta Lynn: Still a Mountain Girl.
Its March 4 airdate coincides with the release of Full Circle, which includes new songs and covers of previously recorded Lynn tunes including "Fist City" and "Whispering Sea."
"I think my fans will be happy" with the mix of material, Lynn predicted, speaking to a TV critics' meeting by satellite from Nashville, Tennessee.
The documentary includes interviews with Jack White, who produced Lynn's last studio album, Van Lear Rose, in 2004; Sissy Spacek, who played Lynn in Coal Miner's Daughter; Garth Brooks; Trisha Yearwood; and Miranda Lambert.
"Some of our favorite moments were with Garth and Trisha ... because they have a personal relationship with Loretta," producer Elizabeth Trojian said.
White offered "extraordinary insights" into how Lynn writes songs, fellow producer Elliott Halpern said.
"She takes her life and can make poetry out of it," Trojian said. "It's so beautiful and simple, and yet the most powerful work."
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Lynn, who cited her children as her proudest achievement, said she remembers how often her career separated her from them.
"That was the worst part about my singing, was leaving my kids. It was really hard and I would try to take them when I could," she said.
Her new album was produced by Patsy Lynn Russell, her daughter, and John Carter Cash, the son of Johnny Cash.