Thompson Square’s Keifer and Shawna Thompson are about to turn T2 into T3. The husband-and-wife duo shared the news of a new baby on the way by posting a picture on Twitter that shows Kiefer holding a Diet Coke Can that says “Dad” and Shawna holding on that says “Mom.” The duo captioned the photo by saying, “Well… We have decided not to be a duo anymore!!!!!!!”