Hemming. Slip stitch or Blind stitch.

Slipstitch or Blindstitch is a small permanent stitch used for hemming that can be almost invisible. You conceal the thread by slipping the needle through a fold in cloth with each stitch.

Secure the thread.Pick up a small (a couple of threads), inconspicuous stitch of the garment with the needle.Take another small stitch in the hem edge, diagonally.Continue to stitch, taking a small stich first in the garment and then in the hem edge, until the hem is finished.

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