Pippa Middleton is planning a grand party for her close friends at her family mansion on new year's eve, it has been reported.

According to the Sun, the Duchess of Cambridge's party planner sister is throwing the bash to celebrate her amazing achievements in 2011. She has also booked an entire hotel in Bucklebury, Berks, for the day, the report has added.

"She's gone from being largely unknown to one of the most recognised women in the world. So she decided to hold a big party to thank everyone," a source close to the Middletons has told the paper.

Pippa, 28, was the centre of attention at the royal wedding early this year when she played the bridesmaid. She, in fact, stole the spotlight in her stunning Alexander McQueen gown at the royal wedding.

As Pippa is known for her awesome rear and the elegant attires at public appearances, fans have already started speculating on what she will be wearing at the new year party.

On the flip side, the style icon drew much criticism by coming to a friend's wedding dressed in vivid green, a colour which is traditionally associated with bad luck and therefore unusual at weddings. Fashionistas worldwide termed the dress as a rare fashion faux-pas.

Here are some of Pippa's stunning fashion statements at public appearances:

The sister of Catherine, Duchess of Cambridge, Pippa Middleton, sits on 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.Reuters
Pippa Middleton watches a match during the French Open tennis tournament at the Roland Garros stadium in Paris.Reuters
Pippa Middleton leaves the central court during the French Open tennis tournament at the Roland Garros stadium in Paris.Reuters
In her stunning Alexander McQueen gown, Pippa Middleton walks at Westminster Abbey in central London, on the day of the royal wedding. Pippa Middleton follows her sister in 2011's top ten beauty icon list and has been named on second slot.Reuters
Pippa Middleton, sister of Duchess Kate Middleton, could be arrested for a gun incident that took place on Saturday in Paris.Reuters
Pippa Middleton smiles before a rain break at the Queen's Club Championships in west London.Reuters
Britain's Pippa MiddletonReuters