Dating sites,, in the real world most BBW are rather 'open' to meet.
Good luck, and be nice, the BBW ladies I knew been very insecure. En die wat vol selfvertroue was, wel, dit was amper asof hulle dink hulle kook, so, doubt they see themselves as BBW. So, dont mention you like the bigger tannies.
I'm a little drunk here, maar hoop dit kon help op n manier.
Edit:
www.letsmeet.co.za
www.okcupid.com