Country music star Dolly Parton has answered the critics who questioned whether she was miming during her Glastonbury set in her own inimitable style, telling the Sun: "My boobs are fake, my hair's fake but what is real is my voice and my heart."

The 68-year-old drew the biggest crowd of the festival when about 100,000 people flocked to the Pyramid stage on Sunday to see her sing hits including Jolene and Blue Smoke.

Fans paid homage by dressing up as the star – who took to the stage in a white rhinestone-encrusted waistcoat and matching trousers.

But many viewing her set as it was broadcast on TV questioned whether the singer was miming, with Sky newsreader Kay Burley tweeting: "Oh, Dolly is miming. How disappointing."

Parton's spokesman told the Sun: "It's ridiculous to suggest Dolly was miming. She's been performing for more than 60 years – she doesn't need to.

"This should not overshadow what was truly a great gig and accomplished performance. Dolly adored every single moment."

Parton tweeted to her 3 million Twitter followers: "Wow... @GlastoFest, You were incredible!!"