Okay, so for this piece, I had originally planned to have this all be together in one image; but due to the sheer size of everything involved, I instead opted to break it down into two separate pieces, for the sake of readability.
Now, with that said, this piece is something of a continuation off of this ( link ), as well as this ( link ), wherein after Chelsea discovers she gained a bit of weight (like in Chelsea's Scale Celebration), she starts to get dressed for the day, and as she does so, starts to daydream about what her future size would be in the (hopefully) near future (like in Chelsea's Dream Bod).
Though as this comic implies however, her daydreams are short-lived, as Chelsea soon discovers that Tilly Gunderson (i.e. her Dad's rather bootylicious girlfriend), has apparently started to gain some weight herself too; thus leading to what many would probably consider to be Chelsea's greatest fear.
And you too will be able to see her greatest fear as well, in the next piece (i.e. ( link )). =p