McDreamy wants you to wear a mask. Doctor's orders…

Patrick Dempsey is all for the wearing of masks during this COVID-19 crisis. So much so that he posted a handsome selfie on Instagram with the caption, "It's a beautiful day to save lives." As you can see below, McDreamy has on a black-and-white checkered mask.

If you watched "Grey's Anatomy," you know those are the words of Dr. Derek Shepherd -- something he would say before he saved someone's life on the TV show. What a positively perfect way to encourage all of his millions of followers to wear masks.

Patrick Dempsey FTW!

Watch Dr. Shepherd say his signature line while listening to the song "Gulls" by David Gray.: