As Nightmare Moon was in the middle of rubbing her large womb, she saw her sister waddling towards her bloated self. Perhaps Celestias size was not enough for her to become immobile, but stagger as she walks. Celestias large girth swung side to side as she continued her small travel. Smirking a bit, the albino princess laid a hoof on her sisters rather larger than usual belly. All Nightmare Moon could do was blush and shift her eyesight away.  
Princess Celestia smirked, You were saying?  
“S-shut up.Get your hoof off me!” Nightmare Moon blushed heavily, as she tried to reach across her massive womb and swat her sisters hoof away.  
Meanwhile, outside of Canterlot, a massive army, followed by Queen Chrysalis, began to wonder where their major enemies were as they converged in on Canterlot.