Celestia wants to be diapered OR She wants to diapering Twilight?

@Twilights-Secret 
That’s true.

@Twilights-Secret 
This.

@northern haste 
I definitely prefer getting diapered by her, at least.
 
She’s a lot bigger than most ponies and is a maternal sort of figure. So…

I don’t care what the context is, I’m game for the padded outcome =D

Celestia: “Please, let me diaper you?” 
Twilight: “Can’t this wait till morning?”

“Twilight, it’s not like you have a choice here…”

@Mike 
It can be whichever way you like

@wayward 
@Twilights-Secret 
Maybe she wants Twilight to diaper her instead?

Lol, I love this. Celestia misses having a foal to care for, maybe?
 
Poor thing doesn’t have the time or energy to care for an actual foal, being the princess and all, Equestria must come first… So she goes to the next best thing.
 
They’re all foals compared to her, anyways.
 
I would suggest the might be offering an age spell, but that’s definitely an adult-sized diaper, heh.
 
Lol, it’s a prequel to this:
 

 
@wayward 
But I don’t wake up Spike in the middle of the night to check if he’s wet the bed and diaper him to make sure he doesn’t while going all coddling on him.

Aww, she’s just checking on her baby. Think of it this way – you’re kinda like her Spike, Twilight.