Dave Grohl's baby is not the child in the viral social media post claiming he is the father

The little girl Dave Grohl illegitimate son is NOT the little rascal who appears in a viral social media post claiming the Foo Fighters frontman is her daddy.

Dave's rep tells TMZ … the IG post claiming Dave is the father of a little girl named Roxie Junie Grohl are fake news.

The post is spreading like wildfire on social media after it was first shared by an Instagram account of a user named @valeriegreyson on Wednesday afternoon.

In the post, which Dave's Camp says is fake, the user shares a picture of a baby in a car seat holding a woman's finger. The caption reads, in part, “My sweet Roxie Junie Grohl, being your mommy has already been the most incredible experience of my life.”

The post falsely claims, “Your daddy has been by my side throughout this entire pregnancy making sure we are both OK and I am so grateful for his love and support” and “Every time I look at you I see so much of your dad in your face… you are a true Grohl through and through.”