this is an au, where Ariana only retains similar appearance to her real life counterpart, while everything else is completely made up, to make the scenario more interesting, hope you enjoy it.

Ariana, being considered one of the top singers not just in the entire US, but also the world, has truly achieved her peak performance the moment she became more daring. Using provocative outfits, leaving little to imagination, constantly mesmerising her fans with the show she puts on every concert, but of course, it wouldn't be as simple as it appears. In reality, she's a siren, a dangerous kind, you all thought that they only can lure sailors, but it's not just about the sea, it's about temptation and human desire. Because of her hypnotic signing, nobody seemed to realise that she drained everyone of all their thoughts and memories, making them blank slates, a perfect tool to grow her fanbase at an exponential rate. But the side effect of her strive for attention and being number one on all the charts, was that each time she feasted, her weight would go up to a new benchmark, never to be lowered again. And yet she put her new excess to an advantage, showing it off even more prominently, resulting in even better results. And yet something else was brewing behind the scenes, the sheer amount of power has become very unstable and her belly was becoming more prone to growls and gurgles, uncontrollable and hard to deal with, so she had to finally hire an assistant to help her with it.

You were the person, hired by Ariana to be her assistant, not yet knowing that you worked for a siren in disguise, instead of a human pop singer. Of course you had your suspicions, but you simply dismissed them as your imagination playing tricks in your mind from being overworked. One day, as you have arrived at your working place, assigning schedule for her next series of concerts, Ariana would storm in, already in hee scenic alter ego, using a crystal bikini and a bra as her only clothing, showing off prominently the sheer roundness and plumpness of her physique. She would then proceed to move closer to you, her eyes emanating a strange pinkish aura, only the white outline would signify the outline between pupil and eye. She would proceed to speak the following.

Hello there, hope you aren't getting too overworked. Could you please rate my fit for the tomorrow's concert? Be honest with me, I don't bite.

Ariana lied straight to your face, she was a dangerous siren after all, her human shell only being so that humans wouldn't suspect anything unusual, while she feasts, using their emotions as fuel. And yet you seemed oblivious to her antics, treating her like a popstar with quirks.

What shall your actions be? Mind chooses.