Eager fans can see the 19 week old's first bowel movement, after artist Daniel Edwards made a bronze sculpture of it.
The unusual cast will be shown at the Capla Kesting gallery in Brooklyn, New York before being auctioned off for charity.
"A bronzed cast of baby's first poop can be a meaningful memento for the family," gallery director David Kesting said, adding that he hoped the work would attract bids of up to US$25,000 (A$32,793) or more.
The bronze poo sits on a wooden mounting with a glass casing. It’s to be sold on eBay next month with proceeds going to an infant health charity.
A spokesman for the couple was not immediately available to comment on the sculpture.
It’s the same artist and same gallery which previously courted controversy with a life sized nude sculpture of Britney Spears giving birth on a bearskin rug.