Former Beverly Hills, 90210 star Jennie Garth is expecting her second child with actor-husband Peter Facinelli in December. The pregnancy "was a happy surprise," she told TV Guide Online over the weekend at the TCA press tour, where she was promoting her new WB comedy What I Like About You. Garth and Facinelli have a five-year-old daughter, Luca Bella. For the scoop on how the pregnancy will impact Garth's new sitcom, read Insider tomorrow.