booty

NO squats, you need elongated stride walking, power walk....ever seen a distance runner with fat butts? right

3x a week I do 4 sets 15/12/10/8 5 pound weight per side. Run 3x per week and elliptical the other 2 days

That's why! You're only squatting with 10 lbs. You need to lift with some heavy weight if you want those glutes to shape up. Do you go to a gym? Start squatting with a barbell and work up. At home? Do jump squats. I have a very round bottom (pretty firm too) and my leg days go like this:

Squat (*kitten* to grass, very deep): 4x12, 10, 8, 6 @ 95-105-115-125 or I do 5X5 at 135
Olympic Deadlift: 3X10, 8, 6 @ 135
Lunges: 25 Front, 25 Back, 30 side walking lunges with bodyweight
Hamstring Curls: 3X12 @ 25 or 50 (depending on cable or plate machine)
Calves: 4X15, 12, 10, 8 @ 90-100

I do this once per week and am sore for 2 days! My cardio is just cycling, interval running, and stairmill.

Just curious did you always have a round bottom?. For as long as I can remember mine had been flat as paper!

It used to be more of a teardrop shape...always big but wasn't always as perky. Now there is more muscle mass at the top of my glutes and my bottom isn't as wide.

Ok first feel free to laugh I dont mind......

My back end is flat, I mean flat and the only place on my entire body that had had zero improvement is my butt! I need help here I need advice from anyone that had had success in this area! Please don't just say squats because they haven't done much neither had running or lunges or elliptical! I need a nice booty lol help!

This obviously connects with your waist to hip ratio! SBS certainly seems to be the right person to talk to about this. I might add, though, that there is a thigh ratio in women that also relates to risk factors, and it seems to indicate that women with large amounts of muscle in the thigh have a certain amount of protection from DM. However, only women who are born with a genetic predisposition for this musculature seem to be able to acquire it. This is because women are pretty well limited to about 10 lbs or so of muscle gain from hard training in their first year, with a steep drop off after that. If you have a naturally flat bum, you are going to have limits on how much you can change it, even with heavy work, as the muscle fibers in the glute med, min, and max (and that tiny piriformis) will only absorb so many new proteins to hypertrophy. Who knows what those limits really are, though, until you try!