Down her throat

You line your cock up with her mouth and **** it down her throat. Her mouth and throat open up accepting your monster cock. You release your cum directly into her stomach and pull out before she chokes. Your cock softens and retracts back into your pussy.

You redress and continue the measurements and dressmaking. At some point, Marla declares it too late and you agree that she should come back in the morning. Once you are ready for bed and your dragon parts are covered up by your cloak once again another servant gives you a note from the Queen.

Sofia is to stay in a different room and the dress preparations finished by midday tomorrow as the wedding will start then. It is unlucky to see the bride the night before the wedding so you won't see your sister until you are to be married.

You go to sleep and in the morning you let Marla into your room with your dressmaking stuff and some designs. She settles on one with lots of ruffles to imitate your scale and makes it very poofy at the back to hide your tail stump. Your wings fold around you and over your shoulders where Marla attaches a neckless between the two claws at the top of your wings making them look like an elaborate clasp. Only the knowing eye would think you are a half-dragon wearing a sleeveless dress and no stocking instead of an elaborate female knight leaning into the killing a dragon theme that is the supposed reason this wedding is possible.