Mark Wilkerson and Melissa Joan Hart. Photo by: Zach Lipp / Admedia / iPhoto.ca / Newscom
Actress Melissa Joan Hart Expecting a Baby | Melissa Joan Hart
Actress Melissa Joan Hart, best known as the star of TV's Sabrina the Teenage Witch, is expecting a baby with her husband Mark Wilkerson, PEOPLE has learned exclusively.

"I'm thrilled to death," says the star's mother, Paula Hart. "I'm so excited. Melissa is feeling great. So far, so good."

The 29-year-old actress is three months pregnant; the baby is due in January. This will be the couple's first child.

Hart and Wilkerson, the 28-year-old lead singer and guitarist for the hard-rock trio Course of Nature, met at a Kentucky Derby party in Louisville, Ky., in May, 2002. They were married on July 19, 2003, in Florence, Italy.

Hart's upcoming film Jack Satin is expected to hit theaters this year.

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