I've put on weight after my delivery. This is one of my favourite churidar which is tight, so I decided to loosen it.
1. Take a matching cloth. I used my moms old Saree of same colour.
2. Just cut a piece of ur desired extension.
3. Remove the sides.
4. 4 inch extension on both sides.
5. Sew on both sides.
6. Join the sides.
7. Great job my churidar is ready to wear.
Everyone can try it , don't keep ur tight dresses idle. All the best.