Watch Prince William and Kate Middleton's Royal Wedding Broadcast on ABC News

April 25, 2011— -- ABC News invites you to witness Prince William and Catherine Middleton exchange wedding vows after nearly a decade of courtship.

From Buckingham Palace, Diane Sawyer and Barbara Walters will anchor live coverage of the royal wedding on the ABC television network starting at 4 a.m. ET.

If you aren't near a television, no need to worry. Catch ABC's live broadcast everywhere we are: ABCNews.com, ABC News' Facebook page, your mobile phone and on the ABC News app for iPad.

ABC News is your front row seat to the royal wedding. Don't forget to visit ABCNews.com where you can watch and share your favorite videos from the best moments of the day, sign the royal guestbook to leave a note for William and Catherine and view photos from the royal wedding in our slideshows.

Plus, join the conversation and interact with ABC News on Facebook and Twitter (@ABC).

David Muir will be on-air with the ABC News team to cover your reaction of this historic day. Follow him on Twitter (@DavidMuirABC) and ask him all your royal wedding day questions, share your thoughts on Kate Middleton's wedding dress and let us know what you think are the best #royalmess and #royalsuccess moments.

Follow @ABCRoyals, the official royal wedding Twitter from ABC News. In the week leading up to William and Catherine's big day, @ABCRoyals will be tweeting the latest royal roundup from London. On April 29th, @ABCRoyals is your source for every detail and headline from the royal wedding, as they're happening.

"Like" ABC News on Facebook to vote and tell us what you think about Queen Elizabeth's hat, the sure to be infamous wedding gown, what could go wrong at the wedding, and much more.

On Friday night, ABC News will continue to be your all access pass for all of the wedding details. Watch a special 20/20 with Barbara Walters 9/8c on ABC.