Sir Mick Jagger is celebrating his 60th birthday with a party in the Czech capital Prague on Saturday.
Sir Mick is the second Stone to hit 60
Sir Mick has chosen the city ahead of a Rolling Stones show the following night.
"He is having a private party with the band and friends in Prague," his spokesman said.
The location of the party is being kept so secret that even guests have not been told but it is reported he will be celebrating in the British Embassy.
Guests include Vaclav Havel, the dissident writer who spent time in jail in Communist times before becoming Czech president, who said guests were being told the location "at the last minute".
On Sunday, the Stones will play in front of 60,000 fans at the Prague National Stadium as part of the European leg of their 40 Licks tour.
Sir Mick is the second of the current line-up of the band to turn 60. Drummer Charlie Watts turned 60 last year.
Keith Richards, the band's notorious guitarist hits the milestone in December. Bill Wyman, who played bass in the band until 1992, is 66.
Sir Mick has not shown any desire to curb his live work - or other aspects of his rock 'n' roll lifestyle.
The Rolling Stones loyal fans reward the band's consistent touring with enormous ticket sales.
"They want you to be like you were in 1969," Sir Mick once said.
"They want you to because otherwise their youth goes with
you. It's very selfish but it is understandable."
The Stones tour will visit the UK next month, with the band playing a handful of dates.
Their London shows include a club date at the 2000-capacity Astoria on 27 August.