Clothesline's Mary Q pattern is fully lined, so if you make the lining in a fabric you like, your dress is reversible.  Two dresses in one -  beat that for versatility! 

Surprisingly, fully lining a dress is not as difficult as you would think.  Time is saved as you don't need to finish any seams with overlocking / zigzag because all seams are enclosed inside the dress and can't be seen. 

Sewing is straightforward - knowing which seams to join together is the tricky part of lining a garment.  To make it idiot-proof, I've included some short videos online, as it's easier to show this in 3 dimensions, rather than through photos or diagrams.

One little tip -  choose fabrics that are opaque, or you will see the inner fabric showing through.

So next time you spill food/drink on yourself, just whip into a bathroom and turn your dress inside out!