Just invested in a Marc Jacobs only to discover you’re knocked up? Gah, timing is a bitch. Turn any bag you already own into a diaper bag with Mommassentials purse-ready containers — a grab bag, bottle holder, paci purse, changing pad, wipe case, clutch, and cosmetic case. Choose individual pieces or go for the whole set.

Available at funktionmoms.com, $24-$199.

Structure is good for baby (he’s sleeping every two hours, right?), but it doesn’t have to apply to your diaper bag. We welcome the slouchy, casual feel of this navy striped bag with open arms. Roomy pockets have only the necessary compartments — including a hidden insulated cavity for a bottle.

Available at babymel.com, $75.

There’s nothing like the smell of a leather diaper bag to distract you from the dirty diaper at hand — except for maybe the bright pink cowhide it’s fashioned from. Eight interior pockets, two pouches with Velcro closures, water-resistant lining, and two inventive exterior zip pockets (perfect for stashing a wallet and smartphone) make it a diaper bag and purse rolled into one. Good thing, considering the price.

Available at tribebags.com, $500.

Meet the more sophisticated (leather trim) and more sensible (water-resistant nylon) cousin of the L.L. Bean Boat and Tote bag. The roomy catchall comes with all the requisite interior pockets, a changing pad, and insulated bottle warmer, but what we love best is how easily it pairs with our go-to mom wardrobe of striped tees, jeans, and Chucks.

Available at perrymackin.com, $178.

The canvas workhorse masterfully marries utility, good looks, and compact design. Three roomy compartments are separated by parent, baby, and snacks. Mom and pop get a built-in case for sunglasses, a smartphone pocket, and zippered storage. Baby gets bottle pockets, a changing pad, and plenty of room for diapering essentials. And snacks get stored in an insulated back pocket big enough to stash a meal (or two).

Available at soyoungmother.com, $175.

This British import may seem overly sweet at first, but we couldn’t resist the butterfly pattern and embroidery. Think of it the way you do crafty finds on Etsy: Mixed with your own less-saccharine look, it works. Plus, the changing pads are the plushest mats we’ve ever encountered in a diaper bag.

Available at pinklining.com, $120.

For those who prefer being vertical to horizontal and ungermy to germy, we’ve found a bag. This upright tote is lined in material that naturally suppresses the growth of bacteria, mold, and fungus, so icky-yuckies don’t settle into pockets, interior walls, or the changing pad. That’s something to amore.

Available on tylucasbaby.com, $345.

There are many layers to motherhood — the good, the bad, the unshowered — which is why it’s sometimes necessary to rely on a beautifully crafted (and, yes, spendy) diaper bag to make you feel better. The latest from Petunia Pickle Bottom’s Cake collection layers printed and laser-cut leather patterns to form works of art.

Available at petunia.com, $760. Available mid-April.

No, your eyes do not deceive you: This is a diaper bag. The convertible catchall can be worn over the shoulder like a tote or slung across your chest like a messenger bag. The only thing tipping off admirers to your mom status is the kid in the stroller.

Available at shoptimiandleslie.com, $170.

Made from the same machine-washable, water-repellent shell as 7 A.M. Enfant’s legendary stroller bunting, it weighs next to nothing but can withstand almost anything. A multitude of pockets (inside and out) means supplies are in easy reach; a slender shape offers impressive capacity without that I’m-packin’-wipes vibe.

Available at 7amenfant.com, $84.