Has Anyone Tried These Butt Lifter Panties? Are they worth it?

Hello ladies! I keep seeing these on Amazon and IG. I'm wondering if anyone has purchased these and do they work? Have any of you ladies used these in conjunction with your BBL procedure? Please share your comments and photos of butt lifters that do and don't work, pros/cons etc. I'm really curious to know about these products. Yay or Nay? Thanks!