Daphne Oz Daphne Oz

Daphne Oz is expecting her first child, The Chew host announced on Instagram Thursday.

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"Hello, baby!! John and I are thrilled to share the best news we've ever received," Dr. Mehmet Oz's daughter wrote with a photo of her sonogram. "Bursting with love and excitement - let the adventure begin!!"

This is the first child for Oz, 27, and her husband, investment fund analyst John Jovanovic, who have been married for three years. It's also the first grandchild for Dr. Oz, who tweeted Thursday that he is "ecstatic" about becoming a grandfather.