Joe Simpson is Cancer-Free After Completing Radiation

Joe Simpson is officially cancer-free!

The 59-year-old father of Jessica and Ashlee Simpson has beat his battle with prostate cancer after receiving radiation treatments over the past few months, a source told People mag.

PHOTOS: Check out the latest pics of Joe Simpson

Joe announced he was diagnosed with prostate cancer back in November of last year. Since then, he underwent surgery and radiation.

Since his diagnosis, Joe has remained positive and continued working as a photographer.

In December, Joe shared tons of cute pictures of his grandchildren as they celebrated Christmas.