'Real Housewives' star Tamra Judge reveals skin cancer diagnosis

"Real Housewives of Orange Country" star Tamra Judge. (NBC)

"Real Housewives of Orange County" star Tamra Judge shared on social media that she has skin cancer.

The reality star posted a selfie on Instagram on Saturday wearing short-shorts that revealed a small mole on her butt. While at first glance it appeared to be a sexy snap, the caption told a different, troubling health story.

The 49-year-old fitness champ wrote, "I work out hard for this Booty. I was planning on competing again in November at 50 years old, but I'm not sure that's happening now. it looks like God has a different plan for me."

The star explained, "I'm showing you this picture because this is what melanoma looks like. I don't want sympathy, I want you to save YOUR a--and get your skin checked. This was just a small black flat freckle.... I had no idea! Ill be fine because my faith is strong and my a-- ain't bad either."

Judge shared she is anxious about her recent cancer diagnosis.

"Going to be honest I've been a little sad, worried and pissed off," she concluded. "But we caught it early and that makes me happy. Happy birthday to me. #saveyoura-- birthday party in Cabo not sounding like a good idea now."