She outgrew her B shells.
Because Rouleaux triangles are too hard to manufacture. What do you call 8 hobbits? A hobbyte.
The matches are made for adults, but kids constantly grab'em and play with them. The situation is quite opposite with breasts.
Because "B" shells are to small and "D" shells are too big.
Algae-bra.
Because B-shells were too small.
She grew out of her b-shells.
Because a and b shells are too small.
They outgrew their leotards.