Snow White

Snow White curtseyed before the Queen. “You summoned me, Your Majesty?”
The mighty witch-queen gazed down at the young maiden before her with contempt. This was the woman that her magic mirror had determined was the most beautiful in all the land? Certainly, she had a youthful charm about her, and her bosom did heave enticingly in its bodice…
“Yes, Snow White, I wish for you to join me here in the palace as one of my handmaidens, for I have heard of your skill at the domestic arts and wish it applied toward my household.” An acceptable enough cover story to keep this upstart around so her royal person could keep an eye on her, and decide what to do.
Quickly, Snow White became the Queen’s favorite servant. She not only was quite easy on the eyes, as the Queen would readily admit, but she was also skilled at all of the talents that the household required for the care and feeding of a powerful witch such as the Queen. She especially admired Snow White’s abilities at procuring nubile young women to sate the Queen’s unquenchable libido, apparently all from the roster of women who had fallen head-over-heels in love with Snow White herself after glimpsing her peerless beauty.
“Have you truly slept with all these women?” The Queen asked her servant one day. “It seems hardly possible for one girl to have amassed such a long list of conquests.”
“I love to share, your majesty,” Snow White said, in a tone that barely betrayed that she was eagerly endorsing polygamy on a scale rarely contemplated. “I believe that beauty should never be locked away from those who wish to experience it.” She smiled so gorgeously that the Queen herself realized that it was likely only a matter of time before she herself was seduced by Snow White’s incredible charms, her own magical defences be damned.
She’d have to kill her one of these days.
“Your majesty, do you find me unattractive?” The Queen gave a start at the question from the normally extremely deferential Snow White. They were alone in the Queen’s chambers.
“Why, Snow White, you, of all people, should have no questions of your beauty,” she bluffed.
“But since I have joined you here in the palace you have slept with a good portion of the most beautiful women in the country, but never made a move toward me. Am I that unattractive to you?” She reached up and pulled down her dress, revealing to the Queen for the first time her perfectly-formed breasts.
“No, not at all! On the contrary…” the Queen felt her self-control slipping away as Snow White stepped toward her, both of them seemingly aroused past all reason.
“Then allow me to pleasure you, your majesty,” Snow White said, laying the Queen down on her bed.
The Queen made a few more half-hearted attempts to stop the beautiful handmaiden, but stopped the moment that Snow White began her ministrations with her tongue. Where had she learned that!? The Queen wondered as Snow White expertly ate her out. She barely even noticed when Snow White traded her tongue for her fingers and instead rose up her torso to gaze upon one of the Queen’s sizable breasts.
“Finally…” Snow White whispered as her lips closed around the nipple.
The Queen spasmed as Snow White began suckling. She could feel the power flowing out of herself and into Snow White, but could make no move to stop her; a witch such as herself was helpless once the process had begun. “Why…?” was all she could plaintively ask.
Snow White made no move to explain herself, simply continued to draw more and more power out of the Queen. Her beauty, already peerless, continued to escalate in hundreds of small ways: brighter skin, rosier cheeks, perkier ass, bigger breasts. Power crackled at her fingertips as spell after spell transitioned between the two.
The Queen’s breasts themselves were now shrinking, as Snow White drank her fill of the Queen’s beauty and authority. Her fingers were still working away at her majesty’s crotch, keeping her in a state balanced between pleasure and despair. Finally, with a loud shimmering noise, the tiara the Queen wore disappeared from her head and appeared in Snow White’s, and she released her hold on the former queen’s must-reduced teat.
“I knew all along,” the Queen said, rising from before the now-drained woman laid out on her bed. “I knew that you planned to eventually dispose of me. I needed only get close enough to remove from you the ability to do so.” The new Queen waved her hands and conjured a regal dress for herself, better fitter her new, even sexier than before body. “Now, I must go introduce myself to my subjects, and explain your treachery. When I return, I trust you will have joined the rest of my handmaidens in preparing supper for the castle.”