Hello! When I was potty training my daughter I did not use pull-ups. This may sound WAY "old school", but I used plastic training pants. The pull-ups just felt too much like a diaper to my daughter and she just used it like a diaper. I let her pick out some awesome underware, which you have probably done, and then I covered it with the plastic pants. I had been trying to stay close to home, and not really do a lot until the pooping part of potty training was done. Well, you can't stay at home forever, so I took my daughter and my infant boy to the store. My daughter was in an outfit that she loved, and then it happened. She came waddling up to me with a look of sheer horror on her face.....She had pooped in her underware and we were not at home!!! We went to the bathroom and cleaned up, and I had to put one of her brothers diapers on her and we had to go home and change. She had the plastic training pants on, so the "mess" didn't go everywhere. But, being out and having that happen, really helped her realize that it's a lot easier to tell me she had to go so that we could go to the potty.
When she told me she had to go, it was of course my job rush right to the bathroom. But it took just a few more times of her telling me she had to go, and rushing to the bathroom, and "whew! We JUST made it, GOOD JOB!" And it firmly sunk in that going on the potty was better than wearing uncomfortable training pants and having an accident in her favorite outfit. I did keep the very nicest clothes on the top shelf for a while though until we were done.....some things just don't wash out. :) Good luck.