By ROB COOPER
'You look beautiful': Prince William speaks to his bride Kate as she holds her father's hand at the altar
Couple will travel from Abbey to the Palace in an open-topped carriage
Two BILLION people to watch wedding today
5,000 royals enthusiasts camped out overnight at the Mall
Hundreds of thousands line the streets to catch a glimpse of the couple
Prince William and Kate Middleton exchange rings in front of the Archbishop of Canterbury during the ceremony
After months of waiting, Kate Middleton and Prince William today tied the knot at Westminster Abbey.
Wearing a flowing wedding dress with a long train and lace sleeves, Kate clutched a bunch of white flowers as she embarked on the short drive to Westminster Abbey, before starting her three-minute walk up the aisle to be with her groom.
As the happy couple exchanged vows, William appeared to have trouble slipping the ring onto Kate's finger.
But to the relief of all, he finally slipped the wedding band on and the ceremony passed without a hitch.
Earlier thousands of people filled the streets of London as royalty, leading politicians and top names from the showbiz world filed into the Abbey for the wedding of the century.
Kate Middleton arrives with her father Michael Middleton to join Prince William and his best man Harry at the altar
William appeared to have a moment of difficulty in slipping the ring onto Kate's finger... But the ceremony went without a hitch
Kate Middleton and her father, Michael, travel in a Rolls Royce to Westminster Abbey
Kate Middleton waves as she arrives with her father Michael Middleton and her sister Philippa Middleton to the West Door of Westminster Abbey in London for her wedding
Brilliant in white: Kate Middleton is taken up the aisle by her proud father Michael
He's here: Prince William, left, arrives at Westminster Abbey next to his proud younger brother and best man Harry with two billion people watching
First glimpse: Prince William gets out of his Bentley and walks into the Abbey - and waits for Kate
Proud father: Prince Charles arrives with William's stepmother Camilla
Showbiz royalty: David Beckham, wearing his OBE on his lapel, centre, and his wife Victoria arrive at the west door of Westminster Abbey as guests arrive for the 11am ceremony
At 10.10am Prince William and his brother Harry left Clarence House, both in full military uniform for the short drive. He was later followed by his bride who had successfully managed to keep her wedding dress a secret from the world.
Kate Middleton today left behind her commoner roots to become Her Royal Highness the Duchess of Cambridge after marrying Prince William.
Bridesmaids and page boys: Tom Pettifer laughs as he arrives with Master William Lowther-Pinkerton, Lady Louise Windsor and Margarita Armstrong-Jones
The royal couple officially became the Duke and Duchess of Cambridge after tying the knot. Prince William has also become the Earl of Strathearn and Baron Carrickfergus.
David and Victoria Beckham, Guy Ritchie and Chelsy Davy were among the 1,900 guests in Westminster Abbey this morning.
There were squeals of joy from the crowd when Beckham waved to the crowd as he arrived. He was wearing a Ralph Lauren morning suit with the OBE he received in 2003 pinned to the right lapel, with his hair slicked back.
The Queen and Prince Philip take their seats
The day is here: A military band perform as they march on the Mall this morning hours before William and Kate marry at Westminster Abbey
His wife, who is pregnant with their fourth child, wore a dark blue dress she designed herself accessorised with a hat by celebrated milliner Philip Treacy.
William's close Eton friend Harry Meade was seen queuing to get into the abbey, as guests waited to take their seats.
On The Mall crowds waved flags and cheered when the Band of the Coldstream Guards marched down toward the Duke of York Steps.
Playing hits such as Barry Manilow's Copacabana, the 44-member band got spectators moving their feet.
The band was directed by Lieutenant Colonel Graham Jones alongside Drum Major Scott Fitzgerald. The historic band has been in existence for more than 200 years.
After William and Kate marry today, the pair will travel from Westminster Abbey to the Palace in an open-topped carriage despite forecasters saying earlier that there is a risk of rain.
Pippa Middleton walks into Westminster Abbey with three bridesmaids and two page boys
The nation's grandmother: The Queen arrives at Westminster Abbey for the Royal Wedding
The heavens are not expected to open until this afternoon - so William and Kate should stay dry as they arrive at the Palace.
The couple will pass the cheering crowds in The Mall after their wedding ceremony in a 1902 State Landau that was used by Charles and Diana 30 years ago.
Waiting time: Prince William and his brother Harry walk into the Abbey to wait for the commoner bride Kate Middleton to arrive
Proudest moment: Kate's mother Carole Middleton walks into Westminster Abbey after a last minute change of outfit
Samantha Cameron, centre, wearing a figure-hugging green outfit stands next to her husband Prime Minister David Cameron, left, and Deputy Prime Minister Nick Clegg, right
Wedding greetings: Prince William and his best man brother arrive at the Abbey
After weeks of rehearsals, the ceremonial guards perform prior to the Royal Wedding today
Earl Spencer talks to guests inside Westminster Abbey where guests were mingling ahead of the 11am ceremony
Guests arrive: There was almost a party atmosphere inside Westminster Abbey as guests mingled before Kate arrives later
Princes William and Harry arrive in Westminster Abbey for the wedding
Trees have been put up inside the Abbey to give it an outdoor feel. This morning there was a party atmosphere inside as they waited for William and Kate
Final preparations: Police officers walk down The Mall this morning ahead of the wedding at Westminster Abbey
Nick Clegg and his wife Miriam, wearing a dazzling polka-dot dress, arrive at Westminster Abbey, right. Inside, left, some guests mingle
Early start: Spectators line the route the royal carriage will take from Westminster Abbey to the Palace later. There will be 1,900 guests at the ceremony
Here come the guests: The first of the 1,900 people with invitations to the service arrive. Tony Blair and Gordon Brown will not be there
Prince William, centre, and his brother, are greeted by Receiver General Stephen Lamport. They walk up the aisle together where they wait for Kate
Huge support: Royal supporters wait along the processional route hoping to catch a glimpse of the couple as they make their way to the Abbey
First people arrive: The 1,900 wedding guests are arriving at Westminster Abbey ahead of the service scheduled for 11am
David and Victoria Beckham talk to Guy Ritchie inside Westminster Abbey as they wait for William and Kate to arrive
Waiting is over: Union Flags in The Mall this morning ready for the newly-married William and Kate to marry later
Royal Wedding Raw Video: "I Do"
KATE MIDDLETON WEDDING DRESS!! (WESTMINSTER ARRIVAL) ROYAL WEDDING PRINCE WILLIAM