Robbie Williams Pulls Out Of Olympic Closing Ceremony
Take That star will not perform because of clash with wife's due date...
"However, just as rehearsals were kicking off, he said there was an unfortunate clash of dates."
Robbie's exit means organisers have reportedly been scrambling to adjust the schedule.
The source went on: "A lot of organisers are now very unhappy. It's such a huge moment for British music and they thought they had the perfect line-up.
"Obviously, Robbie has to put his family commitments first. It's just a shame he didn't realise earlier."
His spokesman confirmed that he was unable to take part "due to the imminent birth of his baby".