I bought this & just put it in my every day pocketbook!

I Love it! It totally protects it & doesn't add all the extra bulk.
http://www.amazon.com/DuraNeoprene-F...ds=dslr+sleeve

But, if you're wanting something to hold lenses too, I'd go with something like this, so you can change your bag whenever you want!
http://photojojo.com/store/awesomene...ra-bag-insert/