Royals and other guests arrive at the church.
Royal Wedding to stream on Youtube
It has been confirmed that the marriage between Prince William and Kate Middleton is to be streamed live on YouTube to millions worldwide.
At the request of the couple you will be able to watch a live TV feed.
Both William and Kate are on Facebook and have set up a page which allows users to click an "I'm attending" button to get hourly updates on the day on the internet.
A spokesman for William said: "This is a first. YouTube tell us this is something they have never tried before."
The public can upload their own video clips congratulating the happy couple onto a Wedding Book site on YouTube. Since February, more than 9.5 million visits have been paid to the site.
A spokesman for St James’s Palace said: “We wanted people to be able to interact with the royal wedding as they watch it.
“Prince William and Catherine Middleton are like any other people their age in respect of social media. They are Facebook users and YouTube users…and their intention has always been that their wedding should be accessible to everyone.”
How will you be watching the Royal Wedding?
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