Why are Batsuits from batman cine are not the same?

First all the cine were made por Warner Bros.
But they have diffrent directors.
batman and batman Returns were por Tim Burton
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And it the same batsuit in both.

Now, batman Forever and batman & Robin were direct por Joel Schumacher
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and produced por Tim Burton

All this cine are in the same universe and continuity. The change of batsuits is explained in the movies.

In batman Forever the riddler destroys the batcave and the equipment, so batman uses a new bat suit.

In batman & Robin the change is just an upgrade for the batsuit.

Those changes in stylies were made por the director o fotografía i guess...but also many toys were sold thanks to that.

For más go to:
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batman fover, and batman and robin, batman changes his suit in the different way to train the tools he haven't trained yet.