The 'Who's the Boss' star, who already has a 3-year-old son named Milo with Bugliari, shared the exciting news on Twitter, reported Ace Showbiz.
"Ahem! Click here for some big, huge, happy news. We are so happy to share with you that Milo is going to be a big brother!," she tweeted.
The 41-year-old actress had earlier said that she was indeed trying for a second baby.
After the birth of her son in 2011, she had mentioned that she would like to have another baby in the near future.