I liked the idea. And I haven't exactly laid out all I owned and counted 33 pieces yet - but I've been thinking about it, and I have an informal goal in place right now to have a wardrobe that fits into my living space. My house was built in 1929 when a "closet" was not a separate room that you walked into, it was a 3x3ft square behind a door. I have that, and a dresser with six drawers, and I've wondered if I could live out of it. This has gotten me to try to move clothes out of the guest room, my kids room, and downstairs closets - when we first moved in, I had to be everywhere just to deal.
So I've gotten rid of bags and bags of clothing this year, most of it donated, but some I decided to store. The project 33 website encourages that. I wasn't sure what size I'd be after pregnancy, and storing clothes gave me a chance to open a bag of clothes I hadn't seen in six months to re-evaluate. It was nice. I'd pick up a shirt, and if I felt like I'd missed it, it went back into the rotation. If I hadn't missed it, wasn't looking forward to wearing it again, then it got donated.
I only have about 5-10 outfits I really love, and I found out that it's liberating to just let yourself wear them every week. The people I work with every day might notice the repeats, but I'm not as concerned about them because they're the people who know me the best. It's the people who I see occasionally, in the important meetings at work, who I care about, and this way they're more likely to see me in an outfit I'm really comfortable in.
My little closet features the clothes I want to wear. For a new item to make it out of the store and into my closet is has to meet a lot of rules now - no dry cleaning required, excellent fit, versatile. It can't just be on sale.
I bought more clothes this year than I normally do because I was just pregnant and basically went a year without buying normal person clothes. But I like the stuff I bought a lot more because I didn't feel like I had to get 20 new shirts to refresh my wardrobe. I'm trying to keep it simple.