My wife doesn't have a butt, either, so I don't feel too bad-off. She complains hers is too small and that it looks like she has no waist. I find her delightful.
I'm sure I would find you delightful, too, slim or wide hips--it's the attitude that counts most.
One of my friendly competitors on ebay sells a product he calls "Big Butt Pills." It is the same or similar pueraria mirifica I sell for breast enhancement. I have noticed no change in my bottom, whether by measurement or by general impression, but some of you may wish to try something like that. The added benefit is that you might increase your breast size.
For my own part, I may not have noticed any change in the hips as at about the same time I started the natural hormone capsules, I started training for and running marathons. That could have trimmed me right back down.
BTW--my dream is to run the Disney Princess Half-Marathon as Heather. Maybe this next March!