Judith Light Wishes "Lots of Love" to Pregnant Alyssa Milano

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Alyssa Milano is all grown up.

Judith Light can't believe her Who's the Boss costar is going to be a mom. "It's kind of stunning to me that she's old enough to have a baby because to me she's still 10 years old," Light told UsMagazine.com Monday at the MCC Theater's 25th Anniversary Gala hosted by Andy Cohen.

She better believe it! Milano, 38, who costarred with Light from 1984 to 1992, recently announced that she and her talent agent hubby David Bugliari were having a a boy.

Though, Light, 62, currently starring in the Broadway play Lombardi, has no doubt Milano is up for the challenges of motherhood. "Alyssa is an extraordinary woman and I know she'll be an amazing mother."

She adds, "She has a huge heart and she is a very committed person. She's a great humanitarian and I think that will be the thread that runs through her being a mother. I wish her every joy in life. I just want to send her lots of love."