I agree with going straight to panties. They have 2T-3T panties in the baby section at Target near the baby undershirts.
It took my daughter 3 days to pp train and 3 weeks to poop train. We finished 2 weeks ago. You just have to put her in panties and a shirt and let her run around. Stay close so you recognize when she needs to go so you can rush her to the potty. Don't scold her, just tell her she needs to go in the potty now that she's a big kid.
I do confess I put a poise pad ($5 for 72 much less than pull ups!!!) in her panties at night. Most of the time she sleeps dry, but this helps keep me sane. Also, I have put 3 sets of fitted sheets with liners between each sheet on her bed. If she has an accident that leaks, I can get her cleaned up, remove the layers to where it's dry and put her back in bed quickly.
GL!