"Bridal wear" is a category of clothing. It's the kind of clothing that people wear at weddings.

You use the phrase "___ wear" when speaking or writing about a category of clothing. For example:

Sales of sportswear have fallen by 10% over the last three years.

Here are some categories of clothing that can be described as "___ wear":

• formal wear / formalwear
• sportswear
• bridal wear
• casual wear

You usually only use "___ wear" when talking about clothing as an industry or a product. It would be strange to comment about a friend or coworker's "casual wear".