Watch Prince William, Kate Middleton Kiss -- Twice!

Watch Prince William, Kate Middleton Kiss -- Twice!

One kiss just wasn't enough!

Prince William and brand-new wife Kate Middleton broke with royal tradition on the balcony of Buckingham Palace on Friday -- when they kissed not once, but twice as thousands of subjects watched from below.

Surrounded by their wedding party plus their family -- Queen Elizabeth, Prince Phillip, Prince Charles, Duchess Camilla, Prince Harry plus Middleton's sister Pippa and parents Michael and Carole -- the newlywed royals smiled and waved to fans.

They leaned in for their first, quick kiss, which many deemed as too much of a "peck." After a couple minutes -- and crowds chants for another kiss -- William, 28, suggested "do one more kiss?"

And the second smooch between William and Kate, 29 -- resplendent in an Alexander McQueen gown -- was a longer, more lingering moment.

Watch the historic double-kiss now.

Commemorate Will & Kate’s big day with our Us Collectors Edition: Royal Wedding with all the photos, anecdotes and details of the wedding. Available for pre-order now and on sale May 6.