It turns out we've been pronouncing Prince Louis wrong: Kate Middleton reveals how to say it correctly

It’s nearly been a week since the Duke and Duchess of Cambridge revealed their new baby’s name as Prince Louis Arthur Charles of Cambridge. 

Kensington Palace tweeted last Friday: “The Duke and Duchess of Cambridge are delighted to announce that they have named their son Louis Arthur Charles.

“The baby will be known as His Royal Highness Prince Louis of Cambridge.”

But following the announcement, there has been a lot of confusion as to how it is pronounced.

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Is it Louis like the classic French pronunciation, "Loo-wee", where you don't pronounce the "s" on the end of the word?

Or is it "Loo-wis"... as in Lewis Road Creamery?

Well, we're here to settle the debate once and for all.

Because Kate Middleton, 36, appears to have inadvertently cleared it up for everyone.

During their wedding ceremony on April 29, 2011, Kate can be heard exchanging vows where she says Prince William's full moniker - including his middle name Louis.

So how did she pronounce it?

She pronounced the French name “Loo-wee”!

Which mean it's safe to assume that's how the Cambridges are also saying the new Prince’s name.

The name means "famous warrior" and it was given to no less than 19 kings of France.