Audra McDonald 45, and husband Will Swenson are expecting.

The Tony winner announced her happy news Tuesday via social media.

“Who knew that tap dancing during perimenopause could lead to pregnancy?” McDonald said in a statement she also tweeted. “Will and I are completely surprised — and elated — to be expecting a new addition to our family.”

The couple already have three children between them from previous relationships. McDonald is already mom, Zoe Madeline, 15. Meanwhile Swenson, 42, is father to two sons, Bridger, 13, and Sawyer, 10.