Would you be seen in public with this sticker on your shirt? (well, if you had a belly but no baby in it, you certainly wouldn't, but that's another story).
Guess how far along this pregnant woman is? No need to ask. Just look at her belly.
$15 stickers incredible endearing. They would put a whole scrapbook together with the photos - and the actual used sticker too. Maybe they would even pose nude for photos, baring only the sticker. Those women probably also have t-shirts that say "I'm with stupid" - and have the arrow pointing to their spouse.
If they really want their stickers to take off, perhaps they could add a post-birth set. As in "32 pounds to go" - to inspire the women publicly to lose the baby weight. Moms can document that in their baby album as well. (If you use my idea, Sticky Bellies, you owe me an idea fee).
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