The pics – showing the heavily pregnant star naked and painted in gold - were part of a campaign to promote the online casino goldenpalace.com. But the images never saw the light of day after her sudden death in February 2007, just weeks after giving birth to daughter Danielynn.
A spokesperson from Golden Palace says the photo shoot was Anna Nicole's idea, as she wanted to show the world the "magic" of pregnancy.
"Like her persona, she wanted to capture the moment by doing something outrageous, memorable, and fun," says the spokesperson.
The casino says it is sharing the never-before-seen photos now as a tribute to Smith's "free spirit and zany sense of humour that captured a worldwide audience and countless devoted fans".
...And to finally get their money's worth in publicity, we guess.