We downloaded the free iTunes version of Episode 1, 'Mystery Client.' At the very end, there is a montage that appears to be from at least two episodes; you can clearly see Kelly, for example, wearing two outfits that differ from the pink, gingham frock from Episode 1. (We could pause and reflect on Kelly's ensembles alone! Go ahead and click on the image to the left to see them better - they are worth their very own speculation.)
But two frames have your team BTD all abuzz. Check them out!