Remember the final bowser fight when you only had 16 stars? When you have to do the bunny glitch to get through the door, how do you get Mario and the bunny through the door?

Pff,, never tried, but try to hold that bunny before that star door. Put it down. And walk against that bunny. If you do good then the door will open and the bunny will go through too.
Good Luck

As I recall, it would be impossible to go to the final Bowser fight like that. Namely because you'd have to pass through the locked door top of the stairs. Not only are you lacking the key but the area behind it doesn't load until you go through the door, so you wouldn't be able to take the rabbit through.

Yeah i cant imagine how he manage that.
Because i think nobody knows how you have to slide up that stairs.

no you do a back wards long jump, the only hard thing of beating it like that is the bunny, ive done though

dont try using a turbo button to do the long jump though, it's not fast enough

How U do bakwards jump(I messed up my spelling on purpose)

Perform a long jump but right when you jump hold down the opposite direction you are going and you will perform a backwards jump.