Like many celebrity moms, Alyssa Milano is turning to yoga to stay healthy during her pregnancy.

The glowing mom-to-be visited a yoga class in Woodland Hills, Calif., on Tuesday, smiling at paparazzi as her belly bulged underneath a gray sweatshirt.

This is the first child for the 'Who's the Boss' star and husband, David Bugliari. The duo, who married in 2009, are said to be "just over the moon. They are so excited," according a source close to the couple.

Milano isn't the first star to practice prenatal yoga. Alicia Silverstone offered photographers a peace sign, even though she looked ready to pop, on her way to yoga class earlier this week.