Thanks to a newly posted throwback photo, we now know that Gwen Stefani’s son Apollo is his grandma’s lookalike! It’s always fun to see genetics in action within a household, especially when a resemblance seems to skip a few family members before resurfacing so clearly. Such certainly appears to be the case in Stefani’s home, as she unwittingly proved by sharing an old black-and-white picture of her mom, Patti Ann Stefani.

Stefani posted the nostalgic snapshot of her mom in her younger years in celebration of another circle around the sun for Patti Ann. The pop-rock singer kept her caption brief, simply saying, “Happy birthday to my mama.” And while she didn’t mention her youngest child, the comment feed filled up with both birthday wishes for her mom and remarks about the resemblance between young Patti and little Apollo.