The 69-year-old 'Jumpin' Jack Flash' singer's bright green jacket was especially designed by his girlfriend, L'Wren Scott.
Jagger wanted it to reflect the English countryside where the band was playing at the festival in Somerset, Southern England, at the end of last month, reported Women's Wear Daily.
"We started to think about the Glastonbury show and I said to her that I wanted something very English - an oak leaf. That's where we started from in the Glastonbury show, nobody in the audience realised they were really oak leaves - but I did," Jagger said.