Pippa Middleton Flashes Cleavage in Plunging Red Gown

Celebrity Style October 3, 2011 AT 9:30AM By Andrea Lavinthal

Credit: Indigo/Getty Images

How low can she go?!

Pippa Middleton, who knows a thing or two about stealing the spotlight, stepped out in her sexiest look yet.

The 28-year-old brunette attended the Boodles Boxing Ball on Saturday night in a stunning red satin "Begonia" dress with a plunging neckline from the Temperley London Autumn Winter 2011 collection. She accessorized with gold heels and a matching clutch. See more pictures of Pippa's sexy ensemble from PopSugar.

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The charity event drew several British royals and celebs including Princesses Beatrice and Eugenie, Prince Harry's ex-girlfriend Chelsea Davy and former Spice Girl Geri Halliwell.

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Middleton, who was escorted by her boyfriend Alex Loudon, was caught smooching the financier, 31, by the Daily Mail outside the Park Plaza Hotel in London around 4:30 a.m.

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