What are non surgical procedures for bigger booty?

Some photos of your anatomy would be very helpful before providing any recommendations. However as a general rule, there are no good nonsurgical options to lift and enhance the buttock.  All injectable fillers that are permanent (eg silicone liquid, PMMA, & hydrogels) have disastrous consequences and all temporary or semi permanent fillers (eg. Hyaluronic acids & Sculptra) are essentially scams and provide minuscule results that melt away within months to a year and cost tens of thousands of dollars for absolutely no results in the end. Hence, the only relatively safe, reliable, and permanent option is buttock implants.

Dear bhbee12,
it is hard to tell for sure without an examination. Generally speaking, the buttocks can be augmented using implants or fat transfer. If you want to avoid surgery, you can try exercising in order to build your muscles. If you are considering a surgery, I would suggest you to consult a board-certified plastic surgeon. Only after a thorough examination you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Sculptra unlike other fillers increases volume as it induces collagen production. So the solution itself is not the one that produces the added volume. The process relies on the body's natural collagen production. It induces the body to produce collagen so that volume is increased in that area. Please contact a qualified provider or a board-certified physician with extensive experience in these procedures.

Sculptra is the most popular procedure for non-surgical buttock augmentation to enhance,contour and shape the buttocks. It stimulates your skin’s own natural collagen production, working over time to enhance the shape of the buttocks. The results are gradual and last up to 2-3 years. Typically 3 treatments spaced 6-8 weeks apart are needed.

The most famous treatment to reshape the booty is Sculptra but it requires a lot of vials. Radiesse is another collage stimulation filler with make your buttock be more rounded and to improve the appearance. There is a new safe therapy known as peptones, these are proteins targeted to make your muscle growth and requires you to do exercise meanwhile you apply them intramuscularly in sessions.
Dr Luis Salazar
Aesthetic Solutions 

Hello. I would suggest a "Buttocks Countouring",  a procedure in which through Lipo,  only in that area, we can  reshape  and lift  the buttock by just the aspiration of fat deposits around it. This will not only lift them, but will give you  a nice rounded shape.  
28 year experience
American Society of Plastic Surgeons
International Society of Aesthetic Plasic Surgery
Pracice in Dominican Republic

Dear Bee,Thanks for the question.  To be honest, there are few if any real options for enhancing the size and roundness of your buttocks without surgery.Injections may enhance the buttocks minimally in the short term (injectables like Radiesse or Sculptra), they are expensive and not permanent.  The use of silicone or other permanent fillers may have disastrous late or long term results/issues.Dr T