The 40-year-old professional dancer - who first met documentary maker Dooley when they were paired together on Strictly Come Dancing back in 2018, which they went on to win - uploaded a sweet shot of Dooley cradling their little girl, whose arrival they announced last month.
In the shot, Dooley can be seen sporting a casual outfit with a caramel-coloured hoodie, mom jeans and trainers, with her auburn hair pinned back.
For her part, Minnie is wearing cream-coloured top and bottoms with her booties seeming to colour co-ordinate with her famous mum’s orange cross body bag.
Her face isn’t visible, with Dooley holding her in the opposite direction of the camera.
“Happy Birthday my girl @sjdooley. The most wonderful and beautiful girl in the world,” he gushed in the caption.
He added: “Enjoy today, you deserve everything. Love u so much. Kev and Minnie.”
Stacey Dooley - In pictures
Their celebrity friends were quick to send their well wishes in the comments section.
“Happy birthday beautiful mama!” wrote former Love Island host Laura Whitmore, followed by a kiss.
“Happy bday stacey,” said radio host Zoe Ball, along with a string of red balloon emojis.
While their former Strictly co-star Nadiya Bychkova added: “Happy birthday beautiful lady.”