Pippa MIddleton
IN PHOTO: Kate Middleton’s sister Pippa Middleton reportedly earned $350,000 last year. Her major source of income reportedly comes from her company PXM Enterprise. 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/TOBY MELVILLE

Kate Middleton’s sister Pippa Middleton was recently seen flaunting her envious figure in a red net dress at the British Heart Foundation's Roll Out The Red ball held at the Park Lane Hotel in Piccadilly, London. Pippa is the ambassador of the foundation, which assists in funding research and awareness campaigns to prevent coronary heart disease. The gorgeous 31-year-old appeared at the fundraising event wearing a CH Carolina Herrera dress. She coupled her look with a silver clutch and a bracelet. She wore her hair in loose curls and added a hint of red lipstick to match her dress.

Pippa arrived at the event with her boyfriend Nico Jackson. She has been reportedly dating him for a while; however, this is one of the rarest appearances by the couple since last year. They are said to be in a long distance relationship as Nico has moved to Switzerland for work, according to Daily Mail.

Pippa has been passionately working for the charity. She has also mentioned on the charity's website that she has been working to create awareness amongst women who are at the risk of heart disease. She also added that the death toll amongst women due to heart disease is much higher than due to breast cancer.

Meanwhile, Pippa’s brother James Middleton was also seen at the event. James date for the evening was Donna Air. James have been in a relationship with Donna for two years and according to Hello magazine, the couple looked much in love.

Mollie King hosted the event. She looked stunning in a sheer, cleavage-baring black dress. She revealed during the event that she is honored to host it. She added that the British Heart Foundation is close to her heart as her grandfather “died of a heart disease.” “The BHF has already made vital discoveries in the prevention and treatment of heart and circulatory conditions but there is still so much work to be done. Guests attending the ball will be raising funds which will go directly into life-saving heart research,” she said, reports Hello.