Can you believe we've had these chaotic little creatures in Ireland for 10 years?
Christa Pitts and Chanda Bell are twin sisters, who created the Elf on the Shelf from an old family tradition of their own.
Now, millions of children welcome their own elf into their homes every December.
They spoke to Rebecca on 98FM's Big Breakfast about the Elf's history and the strangest places they have seen their naughty Elves.
Have the elves landed in your home yet? Let us know and send pictures to 0877989898.
Tune into 98FM’s Big Breakfast with Rebecca & Brendan weekday mornings from 7am ⏰