How can I place more than 16 dolls in my secret base (Pokemon Emerald)?

Question

I want to be able to place more than 16 dolls but there is a limit. Is there a way to expand this limit?

Answer 1

Trainers can decorate their Secret Base in any way they please, being able to put up to 16 decorations into the area. Trainers can run while inside of a Secret Base, but cannot ride a bike. A boy in Mossdeep City reminds players of where their own Secret Base is.

You can only put 16 decorations.

Source: Experience, but mostly this Secret Base page.
It sucks I know, but hope this helps.