Only in Tawawaverse.

Alien, that's not how you do clothings.
Even if you can change the 'cup' size of your clothing you'd still need to accomodate the changes on the underbust and around the armpits since both areas will also get fat deposited in them.
Also, kudos for himura kiseki for puttingg that extremely detailed bra on the zipper zoom in pic.

Added the "brand_name_imitation" tag for "TWW" replacing the usual YKK.

So only G & H are almost out of stock. Since D & I are obscured by the bottom frame, maybe I is out completely?

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That actually could be useful.

Rathurue said in comment #2604143:

Alien, that's not how you do clothings.
Even if you can change the 'cup' size of your clothing you'd still need to accomodate the changes on the underbust and around the armpits since both areas will also get fat deposited in them.
Also, kudos for himura kiseki for puttingg that extremely detailed bra on the zipper zoom in pic.

To be fair, Alien-chan is from an advanced interstellar civilization that has mastered FTL travel. Her suggestion is not wrong, we are just too technologically primitive and lack the post-human textiles to make her vision a reality as they are from her homeworld.