A beaming face and close walk with her beau Alex Loudon at a wedding party added fire to the rumor that Pippa Middleton is all set to walk down the aisle very soon.

Guests present at the marriage ceremony of Thomas Sutton and Harriet Colthurst at St Mary and St Nicholas Church in Wilton, Wiltshire, said Pippa in a pillbox hat and Alexander McQueen designed silk patterned frock almost overshadowed her sister Kate who wore a mid-length raspberry colored lace dress.

Pippa, who turned 28 this month, has been courting Alex for over a year. Alex, 31, is a former England cricketer turned City banker and the blue-eyed-boy of the Middleton's family.

Close friends of the couple confirmed that even after many ups and downs that the couple faced lately, they are still going strong and Pippa has already moved some of her clothes and belongings into his would-be's home near Parsons Green in West London.

Pippa's favorite designer Alice Temperley is already planning on her wedding gown. She's so beautiful - she's perfect and her bum is perfect - it would be such an honor, said Alice.

Pippa Middleton
Pippa Middleton arrives for the wedding of the daughter of the Duke and Duchess of Northumberland, Katie Percy, to city financier Patrick Valentine, in Alnwick Reuters
The sister of Catherine, Duchess of Cambridge, Pippa Middleton and former English cricketer, Alex Loudon, sit on Centre Court at the Wimbledon tennis championships in London
The sister of Catherine, Duchess of Cambridge, Pippa Middleton and former English cricketer, Alex Loudon, sit on Centre Court at the Wimbledon tennis championships in London June 29, 2011. REUTERS
Pippa Middleton watches a match during the French Open tennis tournament at the Roland Garros stadium in Paris
Pippa Middleton, sister of Catherine, Duchess of Cambridge, watches the match between Maria Sharapova of Russia and Agnieszka Radwanska of Poland during the French Open tennis tournament at the Roland Garros stadium in Paris, on May 30, 2011. REUTERS
Pippa Middleton at the Wimbeldon Tennis Championships
The sister of Catherine, Duchess of Cambridge, Pippa Middleton, sits at Centre Court for the quarter-final match between Jo-Wilfried Tsonga of France and Roger Federer of Switzerland at the Wimbledon Tennis Championships in London, on June 29, 2011 REUTERS
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