So far so good

You need to make sure that Jessica isn't around, so you quickly transform into a fly and scour the hotel room for her. Finding the room to be empty, you decide it'll be easier to get around as a human, so you take the form of Jessica. You know that you are now out of transformations for the rest of the day, meaning you're stuck as your sister until tomorrow.

You cannot create clothes when you transform, so you get a wonderful view of Jessica's body, from the tip of her head, to the tips of her nipples, to her neatly trimmed vagina to her toes.

You decide that, as nice as Jessica's body is, you need to hurry up and leave before she gets back. So, you grab the first set of clothes that you found in her suitcase and began to put them on.