113 stars.

I got Cruiser Crossing the Rainbow and House in the Sky from Rainbow Ride.

At that point, any stage I was missing stars from I needed 2 more stars... except Snowman Land, from which I was still missing 3!

I went back to that world and succeeded in something on my first (for the morning) try that I failed at several times before: Using the cannon to shoot myself to where the shell is. Before, I wasn't even sure if using the cannon for that would be successful. And it's hard to correct the trajectory, because you don't really know if you're going too high or low.

Anyway, that instantly got me "Whirl Over the Frozen Pond" star. (I imagine the clue refers to bouncing off and spinning from those flower enemies, but I couldn't get that to work). Then I also got 8 red coins right away. But rather than grabbing that star, I went on and got 100 red coins on the same attempt.

So, that clears out Snowman Land.

So, I said I needed two more stars from each of the other noncompleted stages. Two stages, of course, are Tick Tock Clock and Rainbow Ride. Surprisingly, maybe, is that the other stage is still Shifting Sand Land!

Oh, one other thing I did in Rainbow Ride was activate the cannon, but so far I don't even think I've seen it.