Happy New Year!
KBTG is a standalone story.
https://www.amazon.com/dp/B078QY5K8P
A southwestern news station is struck by a meteorite that bestows all of the female on air personalities with amazing abilities. However, there is a cost to using these new powers: each woman gradually grows in bust size to bra-bursting proportions. Office politics, career posturing and old fashioned jealousy abound in this tale of BE and sex.
This story features women who reach big/large sizes and features MF, FMF, FF traditional sex with several body types from petite to BBW.