I hate when that happens. At least there is a happy ending here...

LONDON: Hollywood beauty Kiera Knightley may have gained a finely honed physique for her role as a warrior queen Guinevere, but apparently "lost" her breasts in the process.
. . .
Knightley has now stopped all workouts and has reportedly got her assets back.
"I've stopped working out since then and now they're back," she said.

Kiera Knightley - Tragedy Averted