OK, I've been experimenting and here we go. I took Warlokk's sundress from his
Classic pinup clothing set and found that it was maternity friendly, which gave me the idea for a maternity dress. I recolored and added the "Knocked up" logo I found and made it more into a t-shirt dress with flat shoes. I have enabled it as maternity and everyday (but would you want to wear a dress that said knocked up when you're not?). Whatever you do with it, enjoy.