Mike Comrie and Hilary Duff Mike Comrie and Hilary Duff

Hilary Duff is going to be a mom.

The former Lizzie McGuire star and husband Mike Comrie are expecting their first child together, she announced on her website Sunday. "We also want to share the exciting news that ... BABY MAKES THREE," she wrote in a blog post timed to her first wedding anniversary with the National Hockey League veteran. "We are extremely happy and ready to start this new chapter of our lives."

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Duff, 23, and Comrie, 30, married on Aug. 14, 2010, after dating since 2007.

Duff most recently starred in the drama Bloodworth.