World Star contains a single Stamp to collect in every level.
As you are riding Plessie, stick to the right side and snag the Stamp hidden between two Gold Rings.
Super Bell required! After the Checkpoint Flag, make it to the top of the area to find three platforms that form a wall when flipped. In your cat form, climb up the wall to reach the Stamp at the top.
Rosalina required! As you are rolling on the spinning platform, you’ll come across two separate paths. Go to the one on the right to find a switch that only Rosalina can press. This will reveal the Stamp!
The Stamp can easily be seen behind a Walleye!
At the end of the first area is a giant brick block wedged in the ground. Either throw a bomb or crash through in your Mega form to find the Stamp below.
Boomerang Flower required! When you are facing off the bees near the end of the stage, look to your right to see the Stamp. Throw a boomerang to snag it.
Mega Mushroom required! Before you crash through the giant brick blocks, break the ones above the sign to find the Stamp.
Before you reach the end of the foggy area, follow the path on the right to find the Stamp!
Cannon Block required! This Stamp can be seen early on in the level. Use the Cannon Block to hit the Question Blocks in front of the Stamp. This will form a path right to the Stamp.
Another free Stamp! Simply walk in and grab it!