Pregnant Kate Middleton shows off baby bump at friend's wedding

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Pregnant Kate Middleton took her baby bump to the Swiss Alps recently to celebrate a friend's wedding. The Duchess of Cambridge and her royal husband Prince William headed to Switzerland's Arosa resort for the wedding of polo player Mark Tomlinson and Olympic gold medalist Laura Bechtolsheimer.

Middleton didn't go skiing in the Alps like her husband and his brother, Prince Harry, but she did go casual during the vacation. One photo of the event shows her wearing a loose-fitting polka dot blouse that definitely shows off her more pronounced shape.

On the day of the wedding, Middleton wore a tan full-length coat with a brown fur trim and a brown hat -- definitely not the sort of outfit that shows off her growing stomach. But, as can be seen in the photo to the left, Middleton hasn't been afraid to wear tight-fitting outfits to public events.

Photo/Video credit: Getty Images