Kate Middleton Wows in Red Marchesa Notte Gown on Opening Night of '42nd Street' in London -- See the Pics!

Kate Middleton is a lady in red!

The 35-year-old royal wowed in a gorgeous Marchesa Notte gown while attending the opening night of 42nd Street at the Theatre Royal in London on Tuesday.

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While Middleton made a fashion statement as usual, the dress' A-line silhouette is quite new for the mother of two. Marchesa Notte's Honeycomb Cap Sleeve A-Line Dress currently retails for $1,195 at Saks Fifth Avenue, but is sure to sell out quickly after Middleton's night out.

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Before the show, Middleton graciously met with guests from the East Anglia Children's Hospice, an organization she's supported since 2012, as they attempted to raise $520,000 toward its $14 million "Nook Appeal" for a new hospice in Norfolk.

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The Duchess of Cambridge appeared to have just as much fun inside the event, as she was given quite the warm welcome on stage and presented with tap shoes by the show's producers Michael Grade and Michael Linnet.

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Middleton's fashion has been on a hot streak since her visit to Paris last month. See the Duchess' fabulous looks in the video below.

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