I had a t-shirt that I was about to trash. It has the perfect fabric for the necklace!
I cut 5 layers from the t-shirt.

I streched them so they got thin.

I left one long piece (For the neck)

I cut the rest 4 different lenghts.

When you strech the fabrin it tends to turn in one side.

I took those 4 pieces as one piece, put them together. I attached the back side of them to the back side of the neck piece and sewed them.

After I finished, I hid the stitches inside.

I cut a long piece from the t-shirt. I folded and sewed both sides. I used needle because I didn't have sewing machine. Machine would do better of course!
I turned inside out.

I cut another little piece for the middle of bow. I tied it on the back but you can sew it, I was too lazy! :)

I attached the bow to the necklace.

Enjoy!