A source tells ET that Burruss is three months along.
Burruss recently spoke with E! News, sharing, "We're so thrilled to announce the news of our bundle of joy, it's a dream come true."
This is the couple's first child together. Burruss said that her daughter Riley and Tucker's daughter Kaela, their children from previous relationships, are excited about the new addition to the family.
The GRAMMY Award-winning singer and reality star tied the knot with Tucker in April 2014.
For more adorable celebrity baby announcements, check out the video below.