For her first public appearance as a mother, Kate Middleton chose an elegant pale blue polka dot dress made specially for her by Jenny Packham, one of her favorite designers.

Last night the Jenny Packham website appeared to have crashed after the word got out that Kate Middleton had worn the empire-line crepe de chine design.

Demand for Kate Middleton’s blue polka dot dress crashed Jenny Packham’s website

Initial reports on Twitter had suggested the dress was from Jenny Packham’s Spring/Summer 2013 collection, leading many shoppers to believe it might available to buy online.

Last night a spokesman for the British designer confirmed that the dress was a one-off creation for Kate Middleton’s long-awaited appearance on the steps of the Lindo Wing.

Asked whether there had also been a pink version made in case the royal baby turned out to be a girl Jenny Packham said: “I couldn’t possibly comment.”

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