This method is quite simple. You just need a few pins and a mirror that will come in handy (or a friend).
Step
Step 1. Wear the dress upside down
Step 2. Measure how much of the dress at the waist you want to reduce by hand
Step 3. Place the first pin on the largest piece of fabric you want to shrink
Step 4. Attach the pins at the top and bottom until they feel snug against the body
Step 5. Take off the dress and sew on the seams according to the size marked with a pin
Step 6. Put the dress back on properly to check if it is the right size
Adjust again if it still doesn't feel right.
Step 7. Sew along the straight seam
Step 8. Remove the basting stitches
Step 9. Try on the dress one more time
Step 10. Cut the remaining fabric so that it leaves about 2 centimeters
Step 11. Press the seams open to smooth them out
Step 12. Your dress is ready to wear
Warning
- When basting, make sure the new seam tapers to the edge of the fabric.
- Be careful not to poke your hand with the needle when removing the dress. However, if you do get stabbed, be sure to rub it with an antiseptic and cover it with a cotton wool cloth, and don't let the finger you touch the needle on the dress.