are teats interchangeable?

[bodenbetty]

I've got the avent bottles but DD not keen on the teats. If I get another make would they fit the bottles or would I have to buy new bottles too?
It could be that I ahve left it too late to introduce a bottel (she is 21 weesk) but want to try.

yeah you can swop them - boots wide neck, tommee tippee, mam will all fit