Double Cherry

Double Cherrie's are collectible items and a power up in the Mario series.

In Super Mario Bros. 2 USA
When you collect 5 of these cherries, you are granted a starman. They are spread out through all of the levels in Super Mario Bros. 2.

In Super Mario 3D World
The double cherry's were redesigned gameplay wise, which willl grant you another copy of the character you are using. You will keep making copies of your character until you touch the flagpole, or get damaged and lose one copy. When you have copies, you control them all at once, so some strategy is needed if you want to keep them alive. The first level the Double Cherries appear in Super Mario 3D World, is Double Cherry Pass