The compression garment is an important part of your Brazilian Butt Lift (BBL) as the full benefit of the procedure is not only from the fat transfer but also the liposculpting. I do think it is important that you have a specialized garment after your procedure. I have tried various garments, with and without material over the buttock area. From a patient comfort standpoint I have found that the garments with a very soft mesh over the buttock has been best. However this is personal decision between you and your surgeon.
I hope this helps, be sure to discuss this with your board certified plastic surgeon.