Prince Henry of Wales aka Prince Harry, sixth in line to the British throne, and American actress Meghan Markle sealed their wedding vows with a kiss outside St. Geroge Chapel in Windsor Castle on Saturday, as thousands of delighted crowds cheered on.

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The couple, now the Duke and Duchess of Sussex, exchanged rings in the presence of Queen Elizabeth II and 600 celebrity guests. After the service, the newlyweds traveled through Windsor along a route lined by an estimated 100,000 people, cheering and waving at them. All the guests were invited to a lunchtime reception at St. George's Hall, hosted by the Queen, and were served with Sir Elton John's all-star performance.

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Prince Harry had asked Sir Elton to perform at the Reception which was hosted by Her Majesty The Queen, and the singer obliged in recognition of the close connection he shares with Harry and the royal family.

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In a departure from tradition, Markle, 36, walked much of the way up the aisle unchaperoned, followed by her 10 bridesmaids and page boys - a move seen as a powerful statement of her feminist principles. Her mother Doria Ragland accompanied her to the chapel. Prince George and Princess Charlotte joined eight other little bridal party members, including several of Harry and Markle's godchildren.

Wearing a dress by British designer Clare Waight Keller, Markle was met by Prince Charles, the Duke of Cornwall, who walked her down the aisle. Her father Thomas Markle was unable to attend due to health issues. Markle's 16-foot-long veil was held in place by a diamond bandeau tiara lent to her by the Queen.

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In her vows, Markle did not promise to "obey" her husband, while Prince Harry broke with royal tradition by choosing to wear a wedding ring. His ring was a platinum band with a textured finish and Markle's was made from a piece of Welsh gold. Prince Harry, flanked by his brother and best man Prince William, was dressed in the frockcoat uniform of the Blues and Royals.