It is very easy to get a baby hem without a special foot by turning/ clipping / turning again. The first turn can be 1/4" or less, and the stitch line as close to the folded edge as possible.
Then take a small scissor and clip the excess fabric of the turn back as close to the stitchline as you can. (Just be careful to not clip into the fabric of the garment by accident.)
The second turn back will be just the width of your first turnback, so keep that first turnback as narrow as possible. Topstitch over your first row of stitching. Only one row will show on the outside.
It gives a very tiny sharp edge and is great for sheer fabrics like georgette and chiffons.