Can a Tailor Tighten Up Clothes When I Lose Weight?

I’ve been losing a lot of weight lately (which is a good thing!) but now a lot of my jackets are kind of loose, and I have to belt my trousers up so tight that they bunch and wrinkle. Can a tailor tighten these up, or am I looking at replacing my whole wardrobe from scratch? Really hoping there’s something they can do!