Charlotte also wore a flower crown selected by Prince Harry and Meghan, which were designed by florist Philippa Craddock.
Smile for the camera, Prince George!
The newly weds - who will now be known as the Duke and Duchess of Sussex - reportedly chose the classic hit as Meghan had previously called it her "happy song", according to a source.
Princess Charlotte sticks her tongue out on her way to St. George's Chapel.
Another adorable image from the day: Prince William walking hand-in-hand with four-year-old Prince George.
The designer of the wedding dress, Clare Waight Keller, was also behind the bridesmaids' dresses.
The 58-year-old writer - who was married to Prince Andrew from 1986 to 1996 - reportedly turned the Hollywood hunk down when he approached her, according to the Mirror Online.
At times it seemed as though nearly everywhere Meghan Markle went on her wedding day, a little band of helpers followed. "As a special memento, each Page has their initials embroidered in gold on their shoulder straps".
While new bride Meghan Markle was no doubt at the center of attention at the royal wedding, another girl stole the show at the big event which aired live in many countries around the world on Saturday, May 19.
Today was an exciting day for Princess Charlotte of Cambridge.
The bridesmaids had to be given a helping hand as they walked up the steps of St George's Chapel. In fact, it was a major surprise when Kate Middleton included her sister Pippa in her bridal party back in 2011 as maid of honor. "She has a very close-knit group of friends and did not want to choose one over the other", Jason Knauf, communications secretary to Prince Harry, was quoted as saying earlier this month.
When the prince was a child, he was known for pulling a move similar to that of Princess Charlotte.