Rick Hoffman, Meghan Markle's Suits co-star, was at the royal wedding on Saturday.
And he became a highlight of the wedding for no other reason than the face he pulled during the ceremony.
It became a bit of a meme.
And on Sunday Hoffman posted a video on Instagram to say he looked like that because someone next to him had bad breath.
Hoffman said: "Imagine sitting next to people, to your right, not knowing which person it was that has halitosis. Hence the face that apparently is now all over the place."
Actor Jacinda Barett appeared at the end of the video and said "That's not the Rick I know".