David Muir has been keeping a low profile of late and rarely posts on social media.MORE: Kelly Ripa reunites with son Joaquin - but she's not impressed!However, the ABC star made the exception on Friday when he took to Instagram to pay a sweet tribute to his good friend Kelly Ripa and her children.Kelly had invited her three kids, Michael, Lola and Joaquin, onto Live with Kelly and Ryan for a Mother's Day special.VIDEO: Kelly Ripa and David Muir's friendship revealed The trio joined their famous mom in a fun game show style segment of the show, where they had to answer questions related to Kelly.MORE: Kelly Ripa looks sensational in swimwear as she celebrates Cinco De Mayo SEE: Kelly Ripa shares a new glimpse inside her bedroom at incredible New York townhouseThe moment was especially significant because Joaquin is currently living in Michigan where he is studying at college, meaning that their TV appearance also marked a mini reunion for the siblings.After Kelly shared pictures from the day on social media, alongside the caption: "Bring your chickens to work day!" David was one of the first to reply.