I highly recommend stairs! walking up stairs or stair machines at the gym. They really provide a great butt sculpting workout when done with deadlifts, squats and lunges!

YES! I was made fun off in high school for having no butt what so ever... While I was pregnant I had to stop lifting weights, and I was stuck just doing cardio, among a few other things. I walked on the treadmill in random incline/speed intervals, always staying pretty elevated, and did a lot on the hip abductor machine (since you can workout sitting down). In just a few weeks my glutes were plumper! It is definitely possible. Weight lifting is amazing :)