Blake Shelton and Gwen Stefani celebrate her dad's birthday in the cutest way

Gwen Stefani's father, Dennis, celebrated his 74th birthday, and the singer took to Instagram to pay homage to her idol.

"Happy b day to the best dad /poppie in the world - not me w out u love u Dennis James Stefani," she wrote.

Along side the caption, she posted a video of Dennis and his grandson Apollo singing "Twinkle, Twinkle Little Star."

We dare you not to smile.

But Stefani wasn't the only one to celebrate the man.

In her Instagram stories, you see her boyfriend, Blake Shelton, kissing her father in one of the cutest pics of the year. Dennis looks as loved and as happy as can be.

Stefani closed the holiday with a post to Shelton, writing, "Happy 4th of July muffins." He's seen under an American flag paying tribute.