No shame in not having a giant butt
Don't wear heals, don't arch your back, it'll hurt and lead to injury!
If you want round butt, exercise!
If you weren't born with a round butt, you'll need to work for it. Exercise is cheaper than spinal surgery, with side benefit of losing weight, feeling better, running faster.
If you want attention, go nekkid !
If you want the attention, but aren't willing to work for it (exercise), then just go nekkid ! Don't need to flash your butt if you're ashamed, flash your clevage and other frontal parts, and just slut it up