The unusual hat that Princess Beatrice wore to the royal wedding is going to be auctioned for charity.
Some people loved the princess's beige designer creation but loads of others made fun of the Lady Gaga-style hat.
Since the big day it's become an internet star - with loads of spoof photos cropping up, including one showing a cat flap in the hat.
Her mum, the Duchess of York, told an American TV show that money raised from the sale would go to two charities.
Sarah Ferguson said the cash from the eBay sale would go to children's charity Unicef and for children in crisis.