updated 12/19/2013 AT 5:00 PM ET
•originally published 12/19/2013 AT 5:45 PM ET
Christmas has come early for Marie Osmond – the singer became a grandmother on Wednesday night.
“Hey everyone ..I just became a GRANDMA!!!!!!!!” she Tweeted, adding two minutes later, “It’s a boy!”
It’s the first child for her eldest son Stephen Craig and his wife, Claire, and the first grandchild for the 54-year-old, who remarried Stephen’s dad, Stephen Sr., in 2011, after divorcing in 1985.