A film studio

You arrive at the film studio of a rather new company, but it seems to have plenty of budget.
The director is still in a meeting so you're all on your own, waiting. You didn't have to prepare anything for the audition so it was probably just going to be some improv.
The amulet you're wearing weighs heavily on your chest, heavier than before...
You start sweating. "Maybe it's just the nerves", you think.
But suddenly you start feeling dizzy and you feel yourself changing...

You're hair grows  longer and starts getting in your face. You're a blonde now.
Your chest expands to two big mounds of flesh, your new breasts...

Your lips get thicker and your hips expand. Before you even realize what's happened you notice that your clothes are also changing. You're now wearing a flowery top with a short, white skirt, your ass barely fits in it! You take a look in the window and you finally see your new reflection. You're a MILF!! And no matter how hard you try, you can't not look sexy... Your lips seem like they were made to suck some juicy cock.

You curse: "Fuck!" Your eyes widen. As you try to think of an explanation for this situation you notice that you're getting very, very horny. You want to feel your new body, the urge to touch yourself is so high. You look up as you here a small cough. It's your director! He looks you up and down with lust in his eyes. He's an ugly man, kind of scary.
"We can start the audition, your co-star has arrived. So remember, your role is Wanda. A desperate housewife in need of a good, hard fuck. Your husband doesn't love you. Your children don't love you. You can only get some love from that sweet, thick cock."

Your eyes are wide open. What does he mean? 

Your co-star comes in, a handsome, well endowed black man. He takes of his pants and shows you his penis, the scene has started. Your body seems to move as if you're used to this kind of work.
You take his penis in your hand and start "working".

You start to get into it. You see the director nodding happily.
"Now fuck him."

In one quick move your co-star slips his big cock in your MILF pussy. You gasp,
IT'S SO FUCKING BIG
You can't handle the pleasure it gives you.

The director calls out angrily: "At least try to look as if you enjoy it!"
You smile.
Who are you to deny him? He's your new boss after all.