I'm guessing whoever designed this costume was suffering from some major post-natal baby blues...
'Oops' indeed. Subtle infanticide if you ask me.
Thanks to anna for link.
If the above outfit doesn't take your fancy you can always choose to dress your beloved offspring as a toilet. (You can be sure those happy snaps will be brought out for the 21st party.)
In reviewing the site I discovered parents also have the option of dressing their baby as a lobster, a suffocating looking packet/loaf of Wonder Bread, a packet of Junior Mints, a big bag of cash, or as a Little Trees air freshener.
Useful for subtle camouflaging of offensive nappy odours.