Every other part of dressing a bump has a workaround. Work doesn't, quite, and the reason is structural: tailoring is cut to a fixed set of measurements. That's the entire point of it. A blazer looks good because it was drafted to a body and then held there with canvas, darts and a lining — none of which negotiate.
So the office is where people spend the most and enjoy it the least. Here's how to spend less.
Start by working out what your office actually requires
Most people dress for a formality level they haven't checked in years. Before buying anything, be honest about which of these you need:
Properly tailored — suits, structured jackets, a real dress code. Rare now, but real in some professions. Smart — a jacket or knitwear, trousers or a dress, nothing casual. Most offices. Presentable — jeans are fine, the bar is "looks like they got dressed". More offices than admit it.
The costs are wildly different, and a lot of people buy for "properly tailored" while working somewhere that's actually "smart". If your office is the second or third, most of this problem solves itself.
The three pieces worth buying
If you buy nothing else, buy these, and buy them early rather than at thirty weeks when you're desperate.
One pair of over-bump tailored trousers. Not jeans. Proper trousers in a smart fabric with an over-bump panel. These will do more work than anything else you own, because they go with every top you already have and they read as "dressed" in a way nothing elasticated does. Get them taken up to your actual length if they're long — it's cheap, and the difference between a trouser that skims the floor and one that sits right is the difference between looking dressed and looking borrowed.
One dress that works for meetings. Wrap, empire or a shift with proper ruching at the sides. One good dress removes the getting-dressed problem entirely on the days you have no capacity for it.
One layer that fastens over the bump, or deliberately doesn't. This is the piece people get wrong. A blazer will not fasten over a bump and shouldn't try — a blazer worn open, in a longer cut, over a fitted top, looks completely intentional. A long cardigan in a good yarn does the same job for less. Either way it's the layer that makes the rest look like an outfit.
What you already own that still works
More than you'd think, because the things that fail are the things cut close to the waist, and offices are full of clothes that aren't.
Any top that's loose through the body still works, often for longer than you expect, as long as it's long enough at the front. The front hem is the thing that gives out first: a bump lifts the front and suddenly a top that was fine is showing an inch of stomach. Longline versions of what you already own are the cheapest fix there is.
Open jackets and cardigans work throughout.
Skirts with an elasticated or wrap waist work far longer than tailored ones.
Every scarf, every piece of jewellery, every good shoe. Accessories don't know you're pregnant and they do a lot of the work of looking put-together.
The things not to bother with
Maternity blazers. Expensive, worn for a few months, and an open ordinary jacket in a bigger size does almost the same job.
Buying your normal work clothes a size up. It doesn't work, for the same reason it doesn't work anywhere else — you get more fabric across the shoulders and back where you didn't need any, and still not the right shape over the bump.
A full maternity work wardrobe bought at once. Your shape changes for months. Buy the three pieces, then add if there's a genuine gap.
The front hem rule
If you take one technical thing from this: check the front hem, not the waist.
Almost every garment that stops working during pregnancy stops because the front hem has risen. The waist might still be fine. The fabric is simply being used up going over the bump, and it comes from the bottom.
So when you're judging whether something still works — and when you're buying — look at how long the front is, and whether the hem is level or cut longer at the front. A garment cut with extra length at the front stays wearable for months longer than one cut level, at exactly the same price.
And keep the receipts
Maternity tailoring is the category where fit varies most between brands, because there's more construction to get wrong. Buy from places with a return policy you can actually use, try things at home, and send back anything you're unsure about rather than keeping it out of politeness.
Anything we suggest about fit is a well-informed recommendation, never a guarantee. The changing room is the only real authority.