“The last supper #royalwedding,” Adams wrote in the caption.
The 36-year-old actor also took to Twitter to share some kind words.
“Going to bed now and thinking a lot about the strange surreal and wonderful day my friend Meghan is going to have tomorrow. Meghan – wherever you are – we are so grateful to be here to watch you both take this monumental step together. Love deeply and live well. #RoyalWedding,” he tweeted.