Lexie Barnes makes the best bags for crafting -- hands down. I've been using one of her totes for over a year now to tote around to various craft fairs and workshops. She always has a nack for making the bags have lots of room. She never skimps on the pockets which I love. Why should it be different for a baby bag? Lexie, a designer mom of four boys knows what she's doing! I've found most bags on the market to be heavy and with too much velcro (don't wake a sleeping baby!). My favorite right now of hers is the Lexie Barnes Darling Bag ($129) in leopard. (Also comes in 2 other prints.) Not only can you fit all your babies essentials inside, as well as in the handy outer-pockets, the bag is lightweight! You can also hang it on your stroller with the travel clips, and opening it up won't wake a sleeping baby thanks to the top zipper.
Follow Lexie on Twitter too! I love her tweets.