This stage is Backstreet Bustle (5-3). This complete walkthrough will provide you with a 100% video playthrough and a screenshot of where you can find all the green stars. To get everything for this stage, you will have to select Toad as your play character.
Game Play Walkthrough Video
Green Star 1
Head to the left at the beginning of the stage. Do a ground pound against the crack in the ground to get the first green star.
Green Star 2
Grab all the cherries first and head to the platform with the 4 when you have four copies of Toad. The platform raises and you can obtain the second green star.
Green Star 3
After obtaining the green star, fall to the bottom platform to the right and get the third green star.
There is a switch on the right with the Toad icon. Stand on it and obtain the stamp for the stage.