First all the 영화 were made 의해 Warner Bros.
But they have diffrent directors.
배트맨 and 배트맨 Returns were 의해 Tim Burton
link And it the same batsuit in both.
Now, 배트맨 Forever and 배트맨 & Robin were direct 의해 Joel Schumacher
link and produced 의해 Tim Burton
All this 영화 are in the same universe and continuity. The change of batsuits is explained in the movies.
In 배트맨 Forever the riddler destroys the batcave and the equipment, so 배트맨 uses a new bat suit.
In 배트맨 & Robin the change is just an upgrade for the batsuit.
Those changes in stylies were made 의해 the director 또는 사진 i guess...but also many toys were sold thanks to that.
For 더 많이 go to:
link 
