The Boss star's actress daughter, Spencer Grammer, gave birth to a baby boy on Monday, her rep confirms to People.
So what's the little guy's name?
The Greek actress and her hubby, James Hesketh, skipped the celebrity bandwagon of bestowing weird baby names and named their little bundle of joy Emmett Emmanual Hesketh.
Born two days past the due date Spencer was given, Emmett weighed in at 7 pounds, 7 ounces.
"Mother and son are doing wonderfully!" the actress' rep said.
It's Spencer's first baby and Kelsey's first go and being a grandfather.
Congrats to the happy family!