Hmm let's see.... 4 total though I never really used any of them that much. One Kate Spade bag that I use as a travel bag, a diaper dude messenger bag for Mr. Bee which we use to travel, a backpack diaper bag, which we used for a little while, and a Skip Hop Versa which our nanny used.

I just prefer to use one of those Baggu style bags -- the lighter the better!