I also have an office job. Though I do have to move a bit, I also get a long dinner, where I graze on fast food or a restaurant. My weight's gone up maybe 25 pounds in a year, maybe more.

If you want belly hang, measure above your hips, with tape tucked beneath your belly.
If you want a belly pocket, you'll need to start measuring for rise more, to ensure you can fit your gut in the jeans. Not enough rise and they won't fit, or give a "front butt".

Oh, and make sure to leave gaining room, either way.

Do the patients get enough to eat? Or do they have to maintain a lower-calorie diet?
Do patients regularly get weighed? Are there scales in the bed somehow?
Are there more immobile men or women?

Younger? Sort of.
Glasses can make eyes seem bigger, even if they don't magnify them. And extra fat makes a rounder face, which is younger looking.

Find some place with a big and tall, and try their stuff, then use what size you fit there to get nice pants. For safety, add 2 to 4 inches.

Or maybe not. Fatness= eating over time, after all.

Gainers, has your intake risen lately? Have you been eating more food, more often?
Tonight, I found myself eating 3 burgers from BK, along with 2 fries, chicken fries, and jalapeno poppers. I still don't feel full.

Have her get a cattle brand.
Maybe "100% hog".

The real key is to put on enough fat post-birth she still gets asked when she's due.

I got here and I thought, "damn, I'd love to be 400."
Then I got a new, 400 pound scale.
Stepped on. Error.
Eventually I asked to use a scale at a clinic.
421 pounds.
Realizing I still didn't "feel" super fat, I aimed for 440.
Now I think I've gone past that, and I'm still eating at the same pace.