Prince Charles and Camilla Parker Bowles have married at Windsor's Guildhall.
More than 20,000 people thronged the streets to cheer the couple as they left the civil wedding ceremony.
Camilla emerged the wife of the future king, and with the title HRH Duchess of Cornwall, after the 20-minute service.
The couple are now at Windsor Castle for a blessing at St George's Chapel attended by the Queen and conducted by the Archbishop of Canterbury.
"Thank you very much," Charles mouthed to the crowd before leaving.
The blessing of prayer and dedication, which is being televised, is to be attended by 800 friends, family and dignitaries from around the world, including Prime Minister Tony Blair and the Duchess of Cornwall's ex-husband Andrew Parker Bowles.
Other guests from the world of showbusiness include comics Stephen Fry and Rowan Atkinson, actors Joanna Lumley, Richard E Grant and Prunella Scales and her husband Timothy West.
Waiting outside Windsor Castle, Vivienne Reay, 53, from Staines, Middlesex, said it was lovely to see the now-married couple.
She said: "It's brilliant, I think it's really nice that they're married, they've waited long enough and I'm just really pleased for them.
"I thought Camilla looked very nice and really lovely in her hat."
Nine-year-old Charlotte Wyatt was in Windsor with her mother Karen, 43, grandmother Freda, 70, and cousin Kiaran Styles, eight.
Charlotte said: "She looked pretty."
Royal spokseman Paddy Harverson said he was sure that once people got to know the Prince's new wife as the "down-to-earth" person that she was, they would soon warm to her.
In a break with tradition, the bride and groom arrived at the Windsor Guildhall together in a Rolls-Royce Phantom VI, painted in Royal claret livery.
Prince Charles' eldest son William and Camilla's son Tom acted as witnesses at the ceremony.
Charles slipped the wedding ring, crafted from Welsh gold, on to Camilla's finger, making her the most senior female member of the Royal Family after the Queen.
Security was extra tight around Windsor with marksmen on rooftops, officers mingling in the crowd and police with sniffer dogs patrolling the route.
However, the only public disturbance was a streaker who broke away from the crowd and was quickly arrested by police.
Three objections lodged against the royal wedding were earlier dismissed by the deputy registrar general Dennis Roberts.
The wedding comes 24 years after Prince Charles's first wedding to the then Diana Spencer. They divorced in 1996.
Diana, Princess of Wales famously referred to Mrs Parker Bowles as one of the contributing factors in the breakdown of her marriage to Charles.
Follow live coverage of the marriage of HRH the Prince of Wales to Camilla Parker Bowles, from Windsor on the BBC:
BBC One - 1200 BST to 1530 BST.
Five Live - 1200 BST to 1300 BST.
Radio Four - 1400 BST to 1530 BST.
BBC News website - 1200BST to 1530BST.
From 6pm digital viewers can watch highlights of the royal wedding by pressing red on their remote control.