Does anyone have a tried and true way of convincing your preschooler to get ready to go in the mornings?

Mornings are turning into an epic battle in trying to convince my almost three year old to get out the door which results in me becoming frustrated as it gets later - the later we leave, the later I am to work.

We have tried giving explicit instruction (doesn't work for miss independent) as well as allowing her to handle things independently with a flip chart showing all of the things she needs to do (potty, eat, get dressed, teeth) with a rewards system but it lost it's appeal rather quickly.