From the Super Mario Wiki
Stardust Shoes is the name of the first item found in the story mode of Mario & Sonic at the Olympic Winter Games. They are a pair of pink ice skates found by Mario and Sonic the Hedgehog during the Adventure Tour which they can use to enter to any game where the use of ice skates is essential, such as Speed Skating. The item found after it is the Comet Skis.
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