Glastonbury 2014: Dolly Parton rumoured as the second headliner

Arcade Fire and Lily Allen have already been confirmed as performers

Dolly Parton has been strongly tipped for Glastonbury 2014 (Getty Images)

The rumour mill is churning with reports that country singer Dolly Parton is set to perform at Glastonbury 2014.

The "9 to 5" singer is tipped to appear in the Sunday Legends slot on the Pyramid Stage.

It would mark the 67-year-old’s debut appearance at the June festival at Worthy Farm in Pilton, Somerset.

"Dolly is perfect for the Sunday Legends slot. It didn't take any convincing - she's always wanted to play Glastonbury," a source told The Sun newspaper.

Parton is expected to perform a set list comprising the greatest hits from her lengthy career.

The country singer has already announced release plans for her new album, Blue Smoke. Parton will release the record in Australia on 31 January 2014, to coincide with her headline tour dates in the country.

The UK leg of the tour will take Parton to London's O2 Arena over the Glastonbury weekend, but there is no performance scheduled on the Sunday, further fuelling Glastonbury reports.

The source added: "It is being kept free deliberately. She'll get a helicopter straight down on Sunday, or maybe even Saturday after the show."

Parton would be joining the other two acts which have so far been confirmed for the 2014 festival: Arcade Fire, who will be headlining on the Friday, and Lily Allen.