What is the perfect way to train your 2 year old baby girl to go to the bathroom? I'm losing my patience.

I have a 2 years old baby girl but yesterday we start training her to go to the bathroom. She knows what to dobut she is not doing it! I ask her what she suppose to do and she tell me with a smile, but then again she is not doing it! I also put real panties to see if she understand it is serious but she don’t want to! MOMS OUT THERE HELP ME!