St. Patrick's Day

Time is flying. It's almost St. Patrick's Day. I have one Irish themed doll in my Etsyshop but I thought I better add an outfit, too. Surly all of us, Irish or not, could use some luck.

So check out this lovely Shamrock set. Of course, the doll traveling in the pocket is green and has green eyes. If your doll owned that set she'd be on the safe side for sure. NO pinching here! Where does this custom come from anyways? Anyone here know? I will have to go investigate.