Potty training HELP!!!

Somebody please help!!!! I am currently potty training my almost 2 year old daughter and if I have absolutely nothing on her bottom she will go to the potty by herself! But AS SOON as I put her training panties on her she goes to the bathroom!!! Someone... anyone...please give me some tips! I honestly don’t want to hear the “she’s too young” because she knows how to go by herself with nothing on her butt and know how to tell me when she goes after she goes in her training panties. No offense I just need some helpful tips! With another child on the way in August I don’t want to have to buy diapers for 2. 😔😭