“Luna X Pippa,” the All of Me hitmaker, 38, captioned the cute shot.
Meanwhile, mama Chrissy Teigen Instagrammed a video of their baby girl kissing the pooch.
On Mother’s Day, the Glory singer shared a heartfelt message for his model wife.
“Happy Mother’s Day to my wonderful wife. Luna is so fortunate to have a mom that loves her so deeply and brings her so much joy,” he wrote.
The soulful singer also shared greetings for his MIL and his own mother.
“Happy Mother’s Day to Luna’s awesome grandmothers too!!” he wrote.
On April 14, Legend and Teigen, 31, shared birthday greetings for their only child.
A post shared by John Legend (@johnlegend) on May 31, 2017 at 3:07pm PDT
🐶💕 A post shared by chrissy teigen (@chrissyteigen) on May 31, 2017 at 2:48pm PDT