Pippa Middleton: Boodles Boxing Ball!

Pippa Middleton arrives at the Boodles Boxing Ball held at Park Plaza Westminster Bridge Hotel on Saturday (October 1) in London, England.

The 28-year-old younger sis of the Duchess of Cambridge wore a red gown with a plunging neckline by Temperley London for the charity event.

PHOTOS: Check out the latest pics of Pippa Middleton

Pippa‘s boyfriend, Alex Loudon, as well as Princess Eugenie and Princess Beatrice, also attended the ball, which benefited the Starlight Children’s Foundation and the Lt. Dougie Dalzell MC Memorial Trust.