I play a tiny sorcerer with a Pseudodragon familiar, I'd like to be able to ride it, but we are both tiny.

We play d&d 3/3.5 mixed (whatever rules end up being more convienent).

The best route seems to be to find a way to enlarge it, if I could make it small I could ride it. Animal-growth spell won't work since dragons aren't animals.

If there's no way to enlarge it, are there any spells/objects that would help me ride it reliably? My understanding is that there is no hard rule stating that you must be the 1 size smaller than something to ride that thing. So I *think* I could ride it unreliably as an "ill suited mount" and take a penalty.

I'm willing to spend money time and feats to make this happen (I'm level 13).