When to try trousers?

Im on day 5 of potty training and my little girl has done fab. We had a shaky half a day on the 2nd day with a couple of accidents but apart from a little dribble thats been it. Yday arvo i introduced knickers and to my surprise she was fine - even told me she needed a poo so no accidents and again so far today weve had 4 wees and 1 poo all in the potty and dry knickers. So my Q is, when do i start putting trousers on? I did bare bum at first and obv now shes confident in knickers but i have been warned it can seem quite different for them in trousers. I am going back to work tomorrow (weve been indoors for 5 days now!) so shes with my parents and they will continue the training but should i let them try trousers or wait til Friday when i am back home with her on my own???



Thanks ladies - Anna & Bethany (just turned 2!)