What was the outfit called that Amanda wore in saw movie ( She had reverse bear trap on )?

Amanda Young from the Saw franchise doesn't wear a specific named outfit in the movies, and the outfits in the Saw franchise aren't typically named.

However, you are likely referring to the outfit she wears in Saw II, when she has the reverse bear trap attached to her head.

This outfit is a:

* Brown, slightly oversized, zip-up hoodie

* Black tank top

* Blue jeans

This outfit is considered iconic in the Saw franchise as it signifies Amanda's descent into Jigsaw's twisted game and her transformation from victim to accomplice.