What seemed like an unnatural fold in her butt seen during her performance at Fashion Rocks 2014 has sparked booty implant rumors for Nicki Minaj. Aptly so, the rapper had been performing her single “Anaconda,” which is an ode to big butts.

A Beverly Hills plastic surgeon has offered the opinion that Minaj has gotten some enhancement in that area of her body. “It does appear that she’s had some sort of augmentation in the gluteal area. It looks like she had gluteal implants placed, or perhaps got fat injections,” said Dr. David Feldmar to RadarOnline.com.

Dr. Feldmar has not treated the sexy rapper, but he does specialize in body contouring and gluteal augmentation. He said that patients usually ask to get liposuction on their back and waist, and the fat from those areas are injected into the buttocks. The injections help give “that lift and pop,” according to the doctor.

WATCH: Nicki Minaj bamBOOBles ass critics http://t.co/cSRrdKJOCT pic.twitter.com/9MuFoDc98q

— TMZ (@TMZ) September 17, 2014

FILL IN the BLANK! @NICKIMINAJ‘s ASS is FILLED with _____? pic.twitter.com/T9iC9fmnyk

— Wired 96.5 (@wired965philly) September 12, 2014

Although touch-ups can be made every six months, said Dr. Feldmar, there may be future complications to butt implants. “For people who move around a lot or dance like Nicki, you feel the implants. They’re not as comfortable. And after 10 years, they can begin stretching the skin and sagging,” he said.

Minaj’s song praising big butts recently garnered almost 170 million views on YouTube, and has snatched the Vevo record for most views in a single day at 19.6 million from Miley Cyrus’ “Wrecking Ball”. The music scene is currently seeing a surge of songs about butts, with Meghan Trainor’s “All About That Bass” hitting No. 1 on the Billboard music chart last week and a teaser performance for Jennifer Lopez’s “Booty” at Fashion Rocks 2014. Erika Ramirez, associate editor of Billboard.com, said that “it’s more about acceptance and appreciation than exploitation. It says something when it’s women talking about and standing up for their own bodies.”

Meanwhile, fellow popstar Cyrus poked fun at Minaj recently by jumping on the butt bandwagon. She donned a prosthetic butt during a performance on Thursday, September 11. While singing her “23” song, Cyrus twerked while wearing the Minaj-inspired prosthetic.

Miley Cyrus starts new feud with Nicki Minaj, mocking her fake butt! #Smilers watch: https://t.co/zCE3th4jUt pic.twitter.com/mb9UxOkVrL

— HollywoodLife (@HollywoodLife) September 15, 2014