The growth of the obsidian alicorns belly began to slow. She felt her large womb become active as her growing foals kicked rapidly in her tummy. The torture her dress went through began to come to an end. Nightmare Moon let out a sigh of relief as her belly slowly stopped its growth. All she felt was her active foal, and her skin, that felt extremely stretched from the sudden growth.
 
“Ahhhhh~ My.Im so.big.”
 
Nightmare Moon began to cue, rub and cradle her oversized belly which held an abundance of foal.
 

 
WWWWWOW THIS is probably the biggest Ive made a mare .-.
 
All done growing nao, now for Celestia to have a tiny bit of fun in the finale at NMMs expense :3
 
Hope you like~