(CNN) - Kelly Clarkson tweeted news on Tuesday that she's expecting her first child with new husband Brandon Blackstock.
"I'm pregnant!!! Brandon and I are so excited! Best early Christmas present ever :)" Clarkson wrote.
No other details, such as a due date, were revealed.
Just five weeks have passed since Clarkson, 31, used her Twitter account to confirm her marriage to Blackstock.
"I'm officially Mrs. Blackstock :) We got married yesterday at Blackberry Farms in TN, the most beautiful place ever!" she said.
The couple married at Blackberry Farm, a rural resort in the Tennessee foothills of the Great Smoky Mountains, about 30 miles south of Knoxville.
Clarkson, the first "American Idol" winner, announced her engagement to Blackstock, a talent manager and father of two, in December.
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