In pictures: Queen Mother tribute

A large collection of royals, politicians, stars and members of the public pay tribute to the Queen Mother at St Paul's Cathedral, ahead of her 100th birthday.

Grand entrance: The Queen Mother arrives for her special tribute

Packed congregation: Around 2,500 guests filled St Paul's Cathedral

The Blairs were there: Politicians joined royals, celebrities and members of the public at the tribute

Centenary celebrations: Florence Briggs was one of the Queen Mum's fellow centenarians at the service

Star attraction: Crowds of wellwishers wait to catch a glimpse of their favourite lady

Face in the crowd: Wellwishers were both young and old, and some even travelled from abroad

Family gathering: Members of the Royal Family after the service

Charming princes: The Queen finds time for a chat with William, 18 and Harry, 15

Royal wave: Princess Margaret waves goodbye to her mother

And a final wave from the Queen Mother herself, after a moving ceremony