eighteen like all other piercings
.belly and nipples
It really depends on where your getting the ear piercing. Tragus, industrial or uncommon ear piercings hurt more then the belly button. If were talking normal lobe piercings, belly hurts more :)
on 'The Sims 2' you can not have body piercings, you can have facial piercings but not body piercings
Not sure what you're asking. Dermal piercings can be put in the same area as a standard belly piercing would. If you're asking if surface piercings are just like belly piercings, no. Technically, navel piercings are surface piercings. other surface piercings require a different shape bar or dermals if you use them. They're typically deeper too.
a belly piercing
Depends on which you get. Your best bet is to google pics of belly button piercings.
Piercing planet, brisbane city! they do underaged piercings (:
There are two types: the top of the belly button or bottom of the belly button.
No they don't.
well like other piercings it can get infected or it could just keep catching on your clothes
of course they can..it makes them look sexier...and they can combine the piercings with the color of clothes they wear...