I have a sewing machine and take mine up for awhile. I used to be a clothes horse, but my current job only requires jeans and t-shirts, so the whole clothes thing has gone out the window.
I like Goodwill, garage sales, consignment stores, etc. for the in between times. Maybe find someone who sews who could take them up for a bit.
At some point though, ya gotta go shopping!

Great fun! With the change of seasons right now, might be a good time for a few new classic pieces. Jackets, sweaters, sweatshirts can survive several size changes as well as skirts, if you dress up a lot. Plus skirts, as long as they don't have pleats are easy to take up. Dress jackets with darts can also be taken up, so you could get them to last until spring with maybe only one session of tayloring.
Jeans can be taken up, but are tougher and you can only do so much there.