Of course! I've used a metallic gold 200gsm paper (bit thicker than the usual paper). The invitation itself is just a normal white paper, but 200gsm as well. But you can actually use even an ordinary construction paper. :)
Cherry Abuan Hi! Depende talaga kung ano yung preferred mo. 😉 yung sakin nilagay ko sa envelope for extra protection. C5 envelope yung gamit ko for this ☺️