Princess "Poppy" Thistle is a minor character in the series. She is one of Holly's younger twin sisters. Along with Daisy, she is very reckless when it comes to using magic and loves to stir up trouble.  

She resides in the Little Castle with her parents and sisters. Poppy differentiates from Daisy by her red dress, being the colour of a poppy flower; hence being called Poppy.