Prince William Calls Kate Middleton's Hair A 'Nightmare'

Prince William has cheekily joked about wife Kate Middleton's hair - calling it a 'nightmare'.

BEST QUALITY AVAILABLE Handout photo issued by Centrepoint of the Duke of Cambridge during a visit to homeless charity Centrepoint's health and wellbeing centre in Soho, central London. PRESS ASSOCIATION Photo. Picture date: Wednesday December 17, 2014. As patron of Centrepoint, William takes a keen interest in its work and since taking up the post in 2005 has toured a number of its facilities and centres. See PA story ROYAL William. Photo credit should read: Centrepoint/PA Wire NOTE TO EDITORS: This handout photo may only be used in for editorial reporting purposes for the contemporaneous illustration of events, things or the people in the image or facts mentioned in the caption. Reuse of the picture may require further permission from the copyright holder.

The royal made the joke when he visited his charity Centrepoint's health and wellbeing centre in Soho, central London, on Thursday morning.

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When the second-in-line to the throne joined a "speed mentoring" session where businesses were providing careers advice to people rebuilding their lives, he joked with a trainee hairdresser, known only by her first name Angel, that she should try styling Kate's "nightmare" hair.

Kate is famous for her gorgeous glossy signature curls, so we know what you're thinking: What nightmare hair? Kate's mane is usually coiffed to perfection.

But, it's actually known to get rather frizzy when it hits humidity.

This was particularly clear when the royal couple travelled to the Pacific Ocean island of Tuvalu back in 2012.

Mandatory Credit: Photo by Tim Rooke/REX (1856251ba) Catherine Duchess of Cambridge - visit to the Cultural Village part of The Pacific Festival of the Arts Prince William and Catherine Duchess of Cambridge on Diamond Jubilee Tour, Solomon Islands - Sep 2012

Thankfully, Kate's lucky enough to be able to have a hairdresser on-hand whenever she travels now.

According to the Mirror and the Daily Mail, hairstylist Amanda Cook Tucker joined Kate and Wills on their recent trip to New York, and ensured not a hair was out of place while she was Stateside.

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The paper adds that Kate also regularly gets her hair dyed at the Richard Ward salon in Chelsea.

During his visit to homeless charity Centrepoint, the Duke also joined in a healthy breakfast session, which involved young people learning about nutritional food.

He then joined his wife - and the rest of the royals - for a Christmas lunch at Buckingham Palace, where, unsurprisingly, Kate's hair was perfect in a half-up do.