Can body shapers help you to slim down?

My housemate has purchase this but so far she used twice. She never wears it anymore because it is difficult for her to put on. I can't agree more as the clasp on is at the back so you need someone to help you to clasp it.

This is not cheap and it is price around MYR$50. Anyway I am not interested to purchase this as I went to try at the shop and find out that it is not suitable for me. As for my friend she has not try out and she just want to purchase it.

Now she is eyeing to find way to slim down without any pain.