Elven Jugs

Since elves are pretty much a hooker race (I honestly haven't unheard of an elf who has a completely non-sex-related job), so I thought it makes sense that their princess is a royal slut XP

And a royal slut of course deserves some royal perks... The greatest of them is possibly the enchantment that enormously enlarges the cupsize in hot water or in steam rooms.

The effect sustains for a few hours afterwards:

Pillow

Until they finally shrink down to their natural size by the morning:

Sleeping Beauty

Of course "refilling the jugs" is the first thing to do in the morning XD