"She walked into the room and said, 'What do you think?' " he tells PEOPLE

Credit: Pascal Le Segretain/Getty

As sovereign of Monaco, Prince Albert has lots of experience with diplomacy.

So when it comes to his stylish wife Princess Charlene and her super-short new haircut, his views are perfectly calibrated.

Asked whether she sought his advice before making the chop, he replies, “I knew that she wanted to do that, and I think she looks great with short hair,” he told PEOPLE in an exclusive new interview just before Monaco’s National Day on Thursday.

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“It was the end of summer and she was doing a lot of activities with the kids,” he explains.

“It’s more like she walked into the room and said, ‘What do you think?’ ”

Our verdict: Most chic mom hair ever.