The Cat Suit makes this world much simpler and you’ll encounter a few Super Bells along the way. Use the Jump Panel at the start to climb up a way then find the first Super Bell in the blocks. Continue climbing up, avoiding the Bill Blasters as you reach another Jump Panel that can be used to reach another Super Bell. Use the conveyor belts to quickly ascend to the top of the tower, sticking to the the left side. At the top is Green Star #1 just waiting for you past some Green +Clocks .
Jump down to find a hidden 1-Up Mushroom at the level down to your right then use the Warp Box next to the Sprixie Princess. Touch the Checkpoint Flag then climb up the wall after grabbing the Super Bell from the ? Blocks . Hop into the Mystery Box then quickly circle around the platform using the Cat Suit to obtain Green Star #2 .
Cross the platform past the Bill Blasters to a few Cloud Platforms. From the left of the Cloud Platforms is a large ? Block . Climb up from it to a hidden 1-Up Mushroom then hop back back over. Be careful, some Cloud Platforms retract into the wall! When you reach the conveyor belts climb up the left one to reach a Cloud Platform up high. Now ride it all the way right to Green Star #3 but don’t move to the Goal Pole yet. Turn back left on this top platform then leap to the Stamp hovering above the blocks then cap the Goal Pole.