Posted by noc (507 days ago)
Bumps & Babes sells the Belly Belt, which is a small triangle of cloth to button to unbuttoned pants.
Annerley sells something like the Belly Band (stretchy tube), but theirs is too loose and not effective at keeping pants up. You can try buying a regular tube top from a street stall, and using it as a belly band. It'll cost about $30, and works just as well.
(I am based in Hong Kong)