Little girl writes hilarious and heartbreaking letter to parents after finding out about Santa Claus

A little girl's letter to her parents after finding out that they were lying to her about the existence of Santa Claus has gone viral since her mother made it public on Facebook.

Nicki Adam's young daughter Belle really went all out in conveying to her parent's the size of their betrayal with the rather hilarious use (and hand-drawn pictures) of the "middle finger emoji" to really get her anger across.

Despite the funny tone of the letter, there's definitely something slightly heartbreaking at how Belle describes her heart being broken by the lie, writing, "Nothing will make me feel better. You lied to me about something I loved that BROKE my heart."

Belle also goes on to enquire about the existence of the Easter Bunny and Tooth Fairy, but there's no mention if her parents revealed the truth about those mythical beings.

The Facebook post had been shared over 16,000 times.

The time has finally come. Belle asked point blank about Santa and she's been asking every day. So we were truthful and...