Weight loss and clothes that have got too big
Short answer: Wait to replace everything until your weight has been stable for three months. Until then, one size in what you wear daily is enough.
Why wait
If the change is ongoing, a new set of clothes will also become too big. So the cheapest route is to keep a few garments in the current size and wait with the rest until things settle.
What you need in the new size first
Underwear and socks show first, because they sit close. Then trousers. Tops last longest, because they are looser to begin with. See bamboo underwear for men.
The old clothes
Keep two or three garments in the old size if you want, but do not leave the whole wardrobe full of things that do not fit. See bamboo clothing for men and bamboo clothing for women.
Frequently asked questions
Can clothes be taken in at an alterations shop
Yes, and it is cheap on trousers and shirts. On knitted garments it is harder.
How many garments should you buy along the way
As few as possible. Five to six garments cover a week.
When should you buy a full new set
When your weight has stayed the same for three months.