I thought that Stelarc was really pushing the envelope when he had an ear implanted into his arm. But someone's outdone him by having silicone breasts inserted into a tattoo ... on his leg.
The result is far more impressive than Stelarc's arm-lobe, yet it was probably much less grant-worthy. Implants are oppressive to women, see.
Still, I reckon it's a damn fine piece of work -- and very realistic. I reckon he might get some unwanted attention from smitten leprechauns if he doesn't keep it covered.