Super Mario Galaxy 2/Starshine Beach Galaxy

Star 2: Climbing the Cloudy Tower
When you finish this level, a Cloud Flower will appear on Starship Mario.

Star 3 (Prankster Comet): Purple Coin Beach Dash
Collect 100 out of a possible 140 Purple Coins. You start with a time limit of 35 seconds, but can pick up time extensions along the way.