Holy Flying Rodents Batman, It's The Bat Bra.

From Boggart Blog Reporter fatsally:

The link between animals and bras, probably as old as the bra itself, though not as old as the ancient and exclusively make British sport of putting ferrets down one's trousers.
Girls used to have 'Sheepdog bras' - round 'em up and point 'em out.
In those golden days a lusty (but charmless) lad might say to a well endowed lady oozing out of her bustenhalter, "If you're selling those puppies can I have the one with the pink nose?"
Then came the size zero era and the world became wise to 'the chicken fillet', a piece of foam shaped like a chicken fillet, which slipped into the lower, outer half of a bra gave a startling improvement in cleavage to the anorexically thin. No longer would girls whose ribs looked as if they should be covered in BBQ sauce have to put up with comments about their shoulder blades sticking out forther than their boobs. For the affluent of course there was the option of having corn-fed chicken fillets implanted under the skin to make up for what Mother Nature had neglected.
Today Boggartblog brings you news of the latest development in brassiere technology, the bat bra.
Secreted in the bra, a baby bat adds uplift, an interesting vibrating sensation and can also help find the way home after being out on the razz to the extent that your legs your legs insist in walking you in circles.
It's the perfect gift for the ladette everywhere!
An added bonus will be the look of pure disgust on a man's face when he gets too forward and comes across (oops, pardon!) not the expected chicken fillet or wad of tissue paper but a breathing, fluttering baby bat!
The experience will guarantee that man never thrusts his attention on another girl without first getting clearance.

So where did we get this bizarre story?

A hotel receptionist from Norwich, U.K. found a baby bat in her bra while at work one day...four and a half hours after she had put on the garment. Makes you wonder what the poor creature was hanging upside down off for all that time if it took her so long to notice it. Let's hope it wasn't claustrophobic (although it probably is now) After all, Bats are an endangered species.