That’s adorable.

@Background Pony #22CB
I regret checking the inflatable tag out….
Yeah, it should be flagged as fetish.

I thought the inflatable tag was for the fetish.

So sweet…

So cute!

This is so cute! I love this so much!

Is strange seeing an image with the summer as a main theme, when we are in autumn. But the image is amazing, that’s undeniable!

Aww I always love seeing Flurry depicted hanging with her great-aunts.

Beautiful

Not seen: the imminent death of the ball as it gets impaled on Celestia’s horn.

still adorable :)

Celestia is best auntie. (Yes, better than Twilight. >:3)

Careful none of your horns pop the beach ball :P

Cute fun

At first I got confused looking at Twilight and thought she had a fifth leg growing out of her back. Took me a moment to realize that’s one foreleg draped over her front rather than two forelegs tucked in.

flurry heart go to the beach with her fellow alicorn princess! is cute to her play with celestia and cadance want take a picture of this! who will not take picture of thier kids to the beach?

@SwedishSnus  
A young adult, probably around Twilight’s age at season 1, maybe just a tad bit younger. But thinking on that….
 
I bet Twilight still would use those and more :>
 
EDIT:
 

 

 

 
Evidence

Flurry is atleast the size of a adult normal pone, time to get those swimming armbands off and learn how to swim young lady.

@Goddess Erosia  
If it happens, it happens. I’m fine with being wrong now though. I think it’s pretty reasonable to not expect or assert those weirdness possibilities as the most likely or the only explanation.

@Cryosite  
They could always last-minute do something weird though. After all the joke that many people believe is Cadence was invented to respond to Hasbro screwing up the first line of princess celestia toys. So who knows, maybe the series finale will be about Twilight saving the long lost third sister.

@Goddess Erosia  
I think the error is the best one to accept. Anything else requires the invention of characters that don’t exist, and explaining why they haven’t been mentioned. Just chalk it up to poor writing, and move on.
 
I usually think that Blueblood is a descendant of Unicornia’s royal line, and his title is more honorary than anything else. It isn’t the same “prince/princess” as what Celestia and Luna have.

@Goddess Erosia  
A third sibling? Hmm, I like that idea…Well, Celly controls the sun, Lulu controls the moon…
 
The sun, the moon, and…the stars?
 
A third Princess called Stellar? (or Prince Stellan?) xD From whom Cadance and Blueblood could be descended, perhaps… :)

@Yet_One_More_Idiot  
Regardless, I think that’s what one of the comics tried to say. That Cadence is an /adopted/ niece. However that works….
 
We’re still confused as to how Prince Blueblood comes into play too, since there’s been ZERO indication that he’s Luna’s kid. And since he’s literally been canonized as “Celestia’s nephew” since season 1, we can only assume he’s either adopted somehow like Cadence was, or there’s some super secret THIRD SIBLING somewhere we still haven’t seen.
 
Or much more likely, it’s all just a big blotch of screw ups that Hasbro didn’t think through with the implications for and they don’t care to explain their own logic.

@ArtColter  
Do many people really do that? (Call a non-blood relative “auntie” or “uncle”, that is)?
 
Tbh, I actually go the other way - I don’t think I’ve ever even call my aunt’s husbands “uncle”. My mum and dad each have a sister, my aunts, but their hubbies…nope, don’t believe I’ve ever used the word uncle (and when I did, once, it felt…really really weird. xD)

@Lord Seraph
 
@Fwelin  
I see Celestia as Cadance’s aunt, but not in a biological sense. We all have that one family friend who you call “aunt” or “uncle” even though they are not a blood relation. That’s how it is with Celestia and Cadance. To me, at least. So it isn’t out of the question for Flurry to call her “Aunt Celestia” as well.