Another old one that I restored with a lot of cleanup, but not 100% so you’ll still see the blemishes lying around.
 
Focusing on a moment far in the two royal sister’s past, we have young Luna that threatened to swallow her sister completely whole as she is if she eats her slice of cake. Celestia’s love for cake got the best of her one day and she did eat it…which was a big mistake as Luna darkened the area around her with her magic immediately afterwards and came at her sister full force with her mouth open bigger than a whales and all Celestia saw left was her small sister sending her down her throat and arrived compressed in her stomach. Luna knew Celestia would do this and planned ahead by practicing magic that allows extending the maw very wide. She even shrunk and swallowed a few of the royal guards as payback, which they enjoy being compressed on Celestia’s body, something they’ll never experience again so best to enjoy it now. Luna will keep her in her belly and the guards for a few hours before regurgitating her back out. Celestia admitted and learned her lesson as she now knows that ber younger sister is capable of swallowing her if it happened again, but Luna mentions that this time she’ll more than likely be taking the full trip.