They're both style icons in their own right, so when Michelle Obama met Kate Middleton in London on Tuesday, it was quite the fashionable affair.

The Duchess of Cambridge, 29, donned a $340 nude, form-fitting Reiss dress that showed off her golden tan (acquired in the Seychelles) and super-slim body.  (The dress has sold out online stateside almost immediately and the surge of traffic even crashed the company's website!)

As for the First Lady, 47, who also knows a thing or two about making a sartorial statement, she chose a pastel floral dress from Barbara Tfank resort 2011 with a pink bolero jacket and a House of Lavande 1940s Hobe brooch.

PHOTOS: Michelle Obama's best style moments

Obama later changed into a a violet dress by Roksanda Ilincic and accessorized it with a House of Lavande 1960s jeweled belt followed by an ivory Tom Ford evening gown for the State Dinner at Buckingham Palace.



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Watercooler Poll

Who Looked More Stylish in London?

Kate Middleton
Michelle Obama