In a dark magical looking room, we see Princess Twilight Sparkle waking up, in her human form she takes when she's in the human world, and next to her is her counterpart native to the human world, also named Twilight Sparkle, but for less confusion let's call her Sci Twi, who also just woke up, and they're both in chairs with shackles keeping each of them in their chairs.
Equestria!Twilight: Um, hey there, me(she says awkwardly, with an awkward face).
Sci Twi: Hello. (In her mind: Oh boy, she's so adorable, she looks like a super cute out going, bubbly girl, and look at me, I look like a total nerd.)
Equestria!Twilight: (In her mind: She looks like a super cute nerdy girl, while I look like a sugary girl trying too hard to be cute.)
Voice from the darkness: Hey girls!
She comes out of the darkness, revealing herself to be Sci Twi's Darkside, Midnight Sparkle, with a much larger figure than usual, at a weight of 575 pounds. The overall shape of her torso essentially being a giant ball.