Not strictly pregnancy related but i have a clothing dilema.

My bfs gran died recently and the funeral is week after my induction. Ive put quite a bit of weight on this pregnancy and when i tried my black maternity trousers on they wouldnt go over my thighs. I dont own a black skirt amd i wont be able to feed in my dresses also my pre baby clithes are unlikely to fit. Its also unlikely i will feel like clothes shopping within a week of giving birth so do you ladies think it would be acceptable to wear black leggings witha long top, heels and a smart jacket or should i order a range of sizes of non maternity trousers to see if something fits and then return....