A pale suit with an open shirt creates a continuous colour area here. Jacket and trousers appear similarly grey-green, and the white shirt is open at the neck. Pale shoes and dark sunglasses complete the combination. The jacket is worn open, with one hand in a trouser pocket. Posture and light beside the stone wall belong to the photograph rather than proving silk or a particular level of comfort.
For your own comparison, first set the pale overall area against an outfit with more contrast. Wear your intended shirt at a fitting and compare the neck opening. Check the real jacket fastened as well if you expect to use it that way during the event. Do not leave your hand in the pocket throughout the trouser assessment: walk and stand with free arms before judging the line. Then look at the hem with your own shoes. This separates the appeal of the photographed pose from the combination that will accompany your actual celebration.