Marie Osmond Is a Grandma!

It looks like Marie Osmond is going to have some last-minute Christmas shopping to do!

The entertainer, 54, shared some happy news on her Twitter account Thursday.

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Osmond's son Stephen Craig (whose dad, Stephen Craig Sr., she remarried in 2011 after divorcing in 1985) and his wife, Claire Olds, welcomed the bundle of joy a little early.

During an October "Good Morning America" appearance, the singer said the baby's due date was December 26.

"She, of course, is over the moon," her rep tells "omg! Insider" of becoming a first-time grandma.

Osmond announced her daughter-in-law's pregnancy during an appearance on "The Talk" in June, gushing, "I am so excited I'm going to be a grandma. I just can't wait."

[Related: Marie Osmond Breast Reduction Confession: 'I Was an E Cup']

She even revealed that Craig shared his baby news during his birthday celebration earlier this year.

"He blew out the candles and then blew me away and said, 'You're gonna be a grandma!' It was really fun."

Leave your congrats for the newest Osmond family member in the comments!