Lisa Rinna's Father Frank Rinna Passes Away

The actress announced the news on her social media accounts.

Rinna, 52, reflected on how hard it was to watch her parents grow older in a blog post on Bravo.

"It's so hard living as far from my aging parents as I do," she wrote last month. "As blessed as I feel to still have both of my parents here on this earth with me, it's hard to know that my dad just doesn't want to be here anymore. I thank God every day, though, that my family, particularly my mother, has such a good sense of humor about life."

"Laughter has helped us get through some pretty tough times together and for that I am grateful. I love my parents dearly, though I think my dad's days are numbered," she continued. "It's just a matter of time now. Please say prayers for him to go peacefully."

The reality TV star thanked fans Thursday night for supporting her through this tough time.