Hilty, who has been seen on Broadway in Wicked and 9 to 5, tweeted Nov. 3, "2 years ago today I met the man of my dreams and now we're proud to announce we're starting a family! #happybirthdaytome! @BrianGGallagher"
The actress added in a statement to Playbill.com, "We couldn't be more excited, and we are looking forward to being parents!"
Gallagher, who was seen in the recent Broadway revival of Jekyll & Hyde, added on his Twitter account, "Yup! Working on a new project w/ @meganhilty! It's been in development for months now, & is due in September! Working title: #GallagherBaby!"
The couple wed Nov. 2, 2013, in Las Vegas.