August 2007 for me... had to dress up for my friend's wedding, so I bought a really nice suit and returned it to the store the next day 
I own *a* suit, but I've lost about 50 pounds since I bought it; it doesn't really fit and I've yet to find a reason to spend the money on a new one... work dress code for me is doc martens, jeans, and button-down shirts, so dressing up is a pretty rare occurrence -- something I've tried to avoid as much as possible after having to wear suits every day for all 4 years of high school.
I own *a* suit, but I've lost about 50 pounds since I bought it; it doesn't really fit and I've yet to find a reason to spend the money on a new one... work dress code for me is doc martens, jeans, and button-down shirts, so dressing up is a pretty rare occurrence -- something I've tried to avoid as much as possible after having to wear suits every day for all 4 years of high school.