Sorry....this is the first post reply I've done here so please bare with me.

Firstly, my lifestyle is 'alternative' ...basically part of the BDSM community.

My learning is that it doesn't matter how big your are. Reason to this is as I have learnt that the body can be 'trained' to accept things.

Sorry if this sounds a bit frightening but giving time and practice a female can take a larger size not all at once bit little by little. Maybe at first with toys such as Vibrators ect.

I think foreplay also helps as the more relaxed then the more enjoyment you have. Play more and often and the results can be great.

I hope this helps.

(Edited to add trigger icon. ~Rayna)