Popsugar Celebrity Mac Miller Ariana Grande's Birthday Tribute to Mac Miller 2019 Ariana Grande Posts a Sweet Note For Mac Miller on What Would Have Been His 27th Birthday 19 January 2019 by Brea Cubit View On One Page Photo 1 of 3 ADVERTISEMENT () Start Slideshow miss u.— Ariana Grande (@ArianaGrande) January 19, 2019 Share This Link Copy ← Use Arrow Keys → 1 Previous Next Start Slideshow Mac MillerCelebrity InstagramsAriana Grande