Jay- Z's mother, Gloria Carter, has revealed that the first-time dad finds it difficult to hide his joy when he spends time with his daughter- Blue Ivy.
She said that the rapper just melts, when the little one calls him 'Papa,' Us magazine reported.
She further said that it warms her heart to see how the 'Run This Town' singer interacts with his daughter.
Carter, who is fully enjoying her role as grandmother to the 16- months-old child, added that the 43-year-old star is a great dad.
"The amazing thing about being a grandmother is that you go get the kids, but when you're tired, you can take them home!" she said.