Shining: “I’ve had dreams like this, only they were sexier and less terrifying…”

Relevant:
 
>>316133
 

Better Idea: “Shoot the one who’s winning, dumbass!!”

@The Mississippi Sliparound  

 
One doesn’t note the color of the magic… (A Canterlot Wedding, Inspiration Manifestation)

Easier solution: make them use magic and check the color of their aura.

@PL  
Relevant Link

“DON’T MAKE ME CHOOSE!’

Shinning: Mommy, Master. Please stop fighting! Think of Twily!

@Background Pony #BF4F  
Good observation. You’re the first person here that doesn’t sleep on the couch for the next 3,000 years.

It’s the cadence on top that’s fake the eyes are greenish like chrysalis.

@HJSDGCE  
That’s why plan A is more attractive (the asking questions part).
 
Plus, who knows, maybe Cadence is into those kinds of things :q

@Cirrus Light  
Afterwards, get slapped by the changeling queen and the princess and now you have to sleep on the couch for a year.

Solution:
 
Capture them both.  
Interrogate them as to their past; Chrysalis didn’t seem to remember Twilight’s little dance, for one.
 
If that doesn’t work, take them both out to be hanged, and tell them if the changeling reveals herself, then she’ll simply be banished, otherwise they’ll both be killed.
 
If that doesn’t do it, then just hang them with no drop (suspension), and cut them down after they choke out. Perhaps the unconsciousness will cause the magic morphing spell to disable.
 
And if that still doesn’t work… Well, then you’ll have to think of more things :q

@Marvelous TK  
You see, in the bedroom alone is the only time Cadence reveals her true secret - the secret that would destroy her legitimacy as a princess, and thus the secret the world must never know!…
 
She’s not an alicorn. She’s actually a unicorn with Fleur’s proportions :p

@Ereiam  
Also, some pretty noticeable difference in the shading. The other one seems to have a green tint.

@Background Pony #DFF1  
This one’s bigger.

It’s obvious who’s the fake one here.  
It’s Shining Armor.

Been posted already.

The fake one is the one without the wings!
 
… Wait…