What's With the Two Titles?

If anybody knows, please tell me. :P I'd always known this movie as "Bruno" because whenever it came on TV that's what it was called. So the other day I was thinking of Gary Sinise and how this is my favorite of his films, so I came here and found out it was also called "The Dress Code." A check showed that it's also called "The Dress Code" on Amazon. After searching a few stores in my area (looking under both titles) I found the DVD today, and it was called "The Dress Code". When I played it the title that came up was "The Dress Code" BUT at the end of the credits it said something like "we would like to thank all persons who made the movie BRUNO possible".

So...whaddup? :/

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