It also proves that ponies don’t really have last names (as in, family names). They just have a name that can be one or more words.

I guess ponies just have the choice of changing their name to match their cutie mark once they get it?  
It would logically explain why most ponies seem to have names matching their cutie marks (since before it just seemed like the names would just predict what their special talent’s gonna be before they even get it)

@Background Pony #8290  
I assume ponies don’t always change their name. Twilight Velvet and Night Light don’t have matching names like Filthy and Spoiled Rich, so she probably kept hers. And then Twilight Sparkle was named for her mother.  
Twilight Sentry, hehehe

@Trahzo  
Years of taste-testing her baked goods, I’d imagine.

I was wondering what the chiffon swirl tag was, but then realized it’s probably Cup Cake’s name before she got married.
 
So Spoiled Rich used to be Spoiled Milk and Cup Cake used to be Chiffon Swirl. What’s next? Twilight Velvet’s before marriage name?

As for Cup Cake… I’d rather say it was pregnancy that changed her body. Hear me out: equine gestation takes 11 months, and the first 3 seasons are implied to have happened within a year. Thus, it’s not that far-fetched to assume Cup was pregnant even back in episode 1.

@javes001  
Oh, that explains Dan’s “you won” quote to Arin, but I don’t remember which episode of Game Grumps it was.

@Trahzo  
Well, yes and no. It is commonly (not necessarily correctly) believed that once men and women have married that they are no longer on the market and therefore don’t have to put up some of the necessities that were imposed by it. By on the market I mean going through the dating scene. The dating scene is a lot easier for most people if they are fit or thin. This kind of thinking about post wedding is really sitcom fodder most of the time nowadays.

@ChuymaruZ  
Does marriage really make someone get fat?

@RIG  
>implying fat is bad
 
she is just a little chubby
 
 
@Trahzo  
marriage

Before Cupcake got fat, I wonder what changed her.

@ChuymaruZ  
And no fat

younger cup cake is adorable