I have done this sometimes.
“I really like the pictures where you are clean shaven. That is so hot for me. Will you be clean shaven if we meet on Wednesday?”
If he says he is keeping the beard right now, I don’t hire.
If he says that he could be, I say “yes please, I would love that”. If he confirms we setup the meeting.
then on the morning of the meeting, when I send him to confirmation, I add “Don’t forget to shave:-)”