A new Instagram photo of Kendall Jenner is sparking rumors again that she had lip injections. In the picture the 18-year-old "Keeping Up With the Kardashians" star is seen with a black hat covering her eyes as she poses for the camera with her sister Khloe Kardashian. Jenner's lips look noticeably fuller in the black and white flick.  

While the model has never addressed the rumors a couple plastic surgeons told Radar Online that they definitely believe she's had some work done.

"Kendall's lips look like they've enlarged substantially," plastic surgeon Anthony Youn told Radar. "I suspect that her lips were either stung by a bee or injected with a filler, like Juvederm. The giveaway to me is that her upper lip is larger than her lower lip."

"Normally, unless your name is Angelina Jolie, the lower lip is 50 percent larger than the upper lip," Youn continued. "When this ratio is reversed, the lips look puffy and unnatural. Hopefully much of the puffiness we see is due to swelling and will improve within the next couple days."

Alicia Hunter, a licensed aesthetician, agreed with Youn telling Radar that she too thinks the reality star paid a visit to a plastic surgeon.

"That definitely looks like filler," she said. "Her lips look unnaturally puffy. Unless she just got it done, and there's swelling, she got too much put in for her age, in my opinion."

Hunter said if the reality star did get injections the procedure could have cost her between $700 to over a $1,000. Jenner wouldn't be the first member in her famous family to have some work done. In an interview with Life & Style magazine Kourtney Kardashian admitted to getting breast implants while in college and Kim Kardashian has also admitted to getting botox.

There has been speculation that Kim had a lot more work done on her face even though she has never admitted to it. Kris Jenner has also confessed to going under the knife. In January, the momager underfelt a facelift to deal with her crow's feet and neck.