10/03/2011 08:06 am ET Updated Dec 06, 2017

Pippa Middleton Dons Racy Red Dress At Boxing Ball (PHOTOS)

Pippa Middleton has a way of always stealing the spotlight. But this weekend, it wasn't her backside that stole the show but rather... her front.

The famous sister-in-law stepped out at the Boodles Boxing Ball on Saturday night in a stunning red satin dress featuring a plunging neckline (quite possibly the lowest we've ever seen her in... save for this). She paired the frock with gold heels and a gold clutch that we're assuming no one even noticed.

But it was, after all, the night to make a statement, as the ball was attended by a veritable "Who's Who?" of British royals and socials. Princesses Beatrice and Eugenie were just two of the 850 guests.

Pippa's brother James and Prince Harry's ex-girlfriend Chelsea Davy both attended, as well as former Spice Girl Geri Halliwell (who chose a strikingly similar red dress and spent much of the night gabbing with Pips).

The party, held at the Park Plaza Hotel, went on all night, as the Daily Mail snapped Pippa and her date, boyfriend Alex Loudon, smooching outside around 4:30am.

Check out Pips as well as the other well-heeled guests in the slideshow below! What do you think of Ms. Middleton's look?

Pippa in Red Dress