...

My midwife does them and has a few pics on her website birthkeepermidwifery.com

I think I saw some lamps like what you are talking about on Pinterest.

like this? ( I Googled "belly cast as lamp")
found here: http://viewitem.eim.ebay.hu/PREGNANT-BELLY-CAST--MATERNITY-BUMP--BODY-CASTING-KIT-/271121963684/item

Quoting Jen K.:" like this? ( I Googled "belly cast as lamp") found here: http://viewitem.eim.ebay.hu/PREGNANT-BELLY-CAST--MATERNITY-BUMP--BODY-CASTING-KIT-/271121963684/item "

no it was like a standing lamp and instead of a regular lampshade it had the belly cast which was painted. the back of the light had nothing.
they had more pics of it with like the belly cast on a frame made up all pretty and in the frame were some light bulbs (behind the cast) so the light came out on the top it looked really really cool.

Quoting Fusselinchen -7:" no it was like a standing lamp and instead of a regular lampshade it had the belly cast which was ... [snip!] ... pretty and in the frame were some light bulbs (behind the cast) so the light came out on the top it looked really really cool."

this maybe?
http://www.artseriously.com/big_belly_art/contact.html