HERE you go.
Now, I know you all are wondering what amazing trick I used to bring about this might change of heart in my opinionated daughter. Well...no tricks. I just asked her about three days before Christmas, "Hey, freako who only does what she wants to, wanna pee on the potty?" She seriously stared at me for like thirty seconds, shrugged her shoulders and then said, "Ok." Wait, what? I grabbed/dragged her to the toilet and I'll be damned, she tinkled. I clapped and thought surely it was a fluke. About an hour later I asked, "Hey head strong child who only pees on the potty to get out of something like Sacrament meeting, wanna pee on the potty again?" Again, the stare, followed by, "Ok." What the hell?
And there you have it. We never looked back. Santa brought TinkerBell unders but Tatiana would only put them on after we called them her "big girl choneys". See, choneys is what we called her pull ups and apparently "panties" is too sissy and "unders" is what Aren wears, so yeah. Anyways, we have success.
Now I have to figure out how to pay for those damned ballet lessons she's been begging for for the past year.