New Delhi, March 19 -- Prince William's latest style choice has sparked an amusing royal debate! The Prince of Wales recently debuted a salt-and-pepper beard, and while many admirers have praised his distinguished new look, his wife, Kate Middleton, had a rather candid reaction.

According to a People report, the Princess of Wales playfully shared her thoughts on William's facial hair during a St Patrick's Day excursion.

"These trends come and go. I was saying to my husband, I'm not sure how long he's going to keep his for," Kate was heard saying over a Guinness pint toast at the sergeants' mess.

Kate, 43, was on an official royal visit to the Wellington Barracks in London to celebrate the holiday with the Irish Guards, meeting senior o...