The beta party hat was the first party hat on Club Penguin.It was released for the beta testing of Club Penguin in October 2005. Penguins got it in the town. The hat was only available for a couple of hours and only around 200 penguins got it. Making the beta hat the rarest item on Club Penguin.
The next anniversary hat is the fourth anniversary party and it could be found at the 4th anniversary party. Both the party and the hat were released on October 24th of 2009. The coffee shop was decorated as always and featured an anniversary cake with a 4 on top. This party hat is a cone shaped hat with purple and blue stripes. It could be found in the pinata above the staircase to the book room.
The fifth anniversary party hat is club penguins fifth party hat being released on October 24th of 2010. It is a cone shaped hat with red, yellow, green, and orange stripes. The entire town was decorated along with the coffee shop having a cake with a big five on the top. The party hat was located in the coffee shop and you could get it by clicking on the box to the right of the cake.The sixth anniversary party hat is club penguins sixth party hat being released on October 24th of 2011. It is a cone shaped hat with a Halloween theme having green, purple, black and orange stripes. Only the coffee shop was decorated at the time since the Halloween party was on the island You could pick it up in the coffee shop by clicking on the balloon popper and then on the hat by the 6th anniversary cake.
The newest club penguin party hat was released at the seventh anniversary party on October 24th of 2012. You could only pick up the 7th party hat for one day only. It has cone shaped having blue and gold stripes. You could obtain the item in the coffee shop beside the 7th anniversary cake which was decorated for the celebration.
The next party hat will be released in October of this year. It'll be the 8th party hat and you can pick it up in the coffee shop on October 24th of 2013.