Kate Middleton Dons High Slit, Jimmy Choos At Claridge's (PHOTOS)

PHOTOS: Kate Middleton Stuns In A Sexy High Slit

In case you didn't get enough black tie dresses last night, here is Kate Middleton in a stunning high-necked Roland Mouret gown with a thigh-high slit and glimmery Jimmy Choos.

Seriously.

The duchess surprised us all with an unexpected outing tonight, arriving with Prince William to the swank Claridge's Hotel in Mayfair for a private function this evening. The event is hosted by the Thirty Club, an elite group of media players.

A royal aide told the Daily Express, "[The prince]’s been invited for about the last nine years but thought it right to accept the invitation this year as he has this personal landmark [his 30th birthday] coming up and it is such a landmark year for the Royal Family in general."

So he and Catherine got dolled up and headed to Claridge's. Will was wearing his typical double-breasted tuxedo (seriously, can someone get him a new tux?). But Kate stunned us with a variety of surprises: a long-sleeve, solid white dress with a high neck, recalling Diane Kruger's 2010 Met Gala gown by Calvin Klein; bare legs (!); rather vertiginous, sparkling Jimmy Choo sandals; and red toes!

How sexy -- and yet still tasteful -- does Kate look with her tights off and her legs showing? (OK, we'll say it: she's almost Angelegging.)

We love this look for Catherine. Do you?

PHOTOS:

kate middleton high slit

kate middleton high slit

kate middleton high slit

See a year of Kate's best outfits!

February 2011 in a Katherine Hooker coat and Aquatalia by Marvin K. boots

Kate Middleton's Best Looks Of 2011

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