Middleton, the sister of the Duchess of Cambridge, married Saturday at St. Marks's 12th century church in Berkshire estate to hedge fund manager James Matthew, 41.
When he refused to calm down he received a rare telling off from his mother, who was eager to prevent anything spoiling her younger sister's big day.
Other guests included James' brother James Matthews, Donna Air and Rodger Federer.
Meanwhile, Harry, William's younger brother, is due to be accompanied by girlfriend Meghan Markle, star of the TV legal drama "Suits", in what would be their most prominent outing together since he revealed they were dating last November.
For her wedding to Prince William in 2011, the Duchess of Cambridge wore the royal family's Cartier Halo Scroll tiara complete with 739 brilliant-cut diamonds and 149 baguette sparklers.
Just this week, the Church of England granted the couple permission to marry at Westminster Abbey should they get engaged sometime soon. Classic cars also brought page boys and bridesmaids from Middletons' home minutes before the bride's arrival, the PA reported.
After the ceremony, Pippa and James walked hand-in-hand from the church and posed for the waiting press before sharing a kiss at the lych gate. She even become a contributor for Vanity Fair.
Meanwhile, her sister Kate Middleton opted for head-to-toe pink.
Prince George, second from right, and Princess Charlotte, far left, were part of their auntie Pippa Middleton's bridal party. But George and Charlotte - and the rest of the page boys and bridesmaids - did extremely well in public, winning hearts along the way in their custom-made outfits.
Kate Middleton, the Duchess of Cambridge's younger sister, Pippa Middleton, got married at a church in presence of the members of Britain's royal family in England.
The Duchess of Cambridge also had a cuter moment with her own sister as she arranged her train for her.
Middleton arrived with her father in an open-top vintage auto shortly before rain started to fall, UK's Press Association reported.
Prince William and Harry were among the first to arrive earlier in the morning.
LONDON (AP) - Privacy-hungry Prince Harry was almost able to bring his American girlfriend to Pippa Middleton's private wedding reception without being photographed.
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