03/03/2017 10:34 GMT | Updated 03/03/2017 10:35 GMT

David Tennant Admits Son's 'Fifty Shades Of Grey'-Inspired World Book Day Costume May Have Been 'A Bit Inappropriate'

Oh dear.

David Tennant has revealed his teenage son took a rather unorthodox approach when it came to dressing up for World Book Day.

The ‘Broadchurch’ star appeared on Thursday’s (2 March) ‘The One Show’, where he admitted two of his children were “devastated” not to be able to dress up for World Book Day, though his eldest son did, with gusto.

David Tennant

David explained: “My eldest, who is 14, who you would think is beyond such things - his school did do it, so he went dressed as Christian Grey.

“Little bit inappropriate, I don’t know how the schoolday went, I’ll find out later.”

He continued: “It was basically a suit with a pair of handcuffs and some dollar bills coming out of his top pocket.”

Jamie Dornan plays Christian Grey in the 'Fifty Shades' film series

Well, nothing wrong with that, is there? Just a teenager off to school dressed as the BDSM-obsessed tycoon protagonist of the ‘Fifty Shades Of Grey’ series.

'One Show' hosts Matt Baker and Angela Scanlon

We’ll let Nicole Scherzinger take this one…

When asked whether his son had borrowed the book from him, David joked: “I sort of hope he hasn’t.”

Among the more imaginative costumes that made HuffPost’s list of favourites from World Book Day yesterday were Greg Heffley from ‘Diary Of A Wimpy Kid’, Mary Poppins and Paddington Bear.

Our personal favourite, though, was the young man who took on a modern literary great, and went off to school dressed as Joe Wicks, with a copy of ‘Lean In 15’ and some midget trees to complete the look.

Still, all of this pales in comparison to our favourite ever celebrity World Book Day offering, when Myleene Klass’s daughters went off to school in a leopard print coat, big sunglasses and a cappuccino.

Yep, Myleene dressed her kids as herself in 2015. Incredible.

Photo gallery 'Fifty Shades Of Grey': Where Do You Know The Cast From? See Gallery