The 18th century was a great period for buttons. Matthew Boulton, an engineer and inventor, perfected his machinery to manufacture them efficiently and quickly. Buttons for all!
I love this description of the buttons on the suit above from the Metropolitain Museum of Art:
"The distinctive buttons on this 18th-century suit characterize the flamboyance with which French men dressed to match the opulence of their female counterparts. The liberally applied buttons would have been a lively pink color and glittering in candlelight next to the elegant textile and salmon-colored lining. The slim silhouette is emphasized by the narrow shoulders, curved front opening and elongated pocket flaps."