The lies she tells.

I'm looking for commiseration and maybe some advice. Just recently my very honest five year old has started to lie about the stupidest things.  I.E. does she have her panties on, has she finished her juice, did she pick up her toys, etc...just the stupidest most easily checkable things.  So any advice to help teach her, without constantly yelling, that telling the truth is easier and in the end gets her in less trouble then telling lies?  Commiseration is also appreciated.