Is there a website where you can upload a pic of you and your hubby and it will show what your kids look like?

Answer 1

This is the closest you can get:

http://www.letsgodigital.org/en/9057/photo_editing_software_morpheus/

It's a photoediting software suite from Morpheus. A write-up about it is here:

http://www.cameratown.com/news/news.cfm/hurl/id%7C2816

It's DIY, I'm afraid.