I recently went on holiday with a fellow new(ish) mom when I found myself in major "bag lust".

She had a bag that did the seemingly impossible. It spanned both "worlds" i.e. Mommy-Land and I'm Still a Grown Up Land.
This magic item could hold all of baby's essentials without appearing as though you were carrying the world along with the kitchen sink, on your shoulders.
Then, miraculously, in the evening, this very same bag would transform into a hip, "I don't need logos or labels because I'm THAT cool" bag.

This bag is a must have for anyone constantly on the lookout for something that everyone else doesn't already own. It's currently sold out but rumor has it that the spring collection will have a fresh crop (including a black version which will be my choice).