After a night of fun sketches, in which Krasinski came off more like an seasoned pro than an SNL first-timer, the Jack Ryan star still remembered to give a sweet shout-out to his two daughters -- Hazel, 6, and Violet, 4 -- whom he shares with wife Emily Blunt.
During the closing moments of the show, during the traditional cast goodbyes, Krasinski gave the usual thanks to the cast and musical guest -- but his shirt conveyed a special message honoring his little girls.
Krasinski, 41, donned a black, long-sleeved shirt with the letters "H+V" stitched into the fabric over his heart.
Many fans may have been momentarily distracted by Machine Gun Kelly and Pete Davidson hugging so hard they both fell off the stage, but Krasinski's stylist, Ilaria Urbinati, drew attention to the tribute when she took to Instagram to share some insight into the look.
"John wanted to have his daughters’ initials monogrammed on his shirt for SNL goodnight looks," Urbinati wrote, adding the tag #Girldad in her caption.
Krasinski also mentioned his daughters during his monologue -- in which he ended up locking lips with Davidson -- while explaining how big a deal it was for him to be hosting SNL.
"I am so honored to be hosting the first show of 2021! I genuinely cannot tell you what a huge deal it is for me to be here right now!" Krasinski shared. "I have been watching this show since I was 8 years old."
"I was trying to explain that to my kids, what I was doing this week, and I told them, 'You know how your favorite show is Paw Patrol? My favorite show is SNL. So for me, it's like I'm on Paw Patrol,'" he shared. "And they were like, 'What? You're on Paw Patrol?' And I was like, 'No, no, no.' And they were like, 'Oh, call us when you're on Paw Patrol."