Rumer Willis celebrates 6 months of sobriety

The actress announced the news on Instagram.

"I will be the first one to say I'm not perfect and I mess up sometimes and every once in a while I get it right but I wanted to share this because I am really proud of myself," she began in the lengthy caption.

"Yesterday I celebrated 6 Months of Sobriety," Willis, 28, wrote. "It's not something I planned on but after the long journey of getting here I can honestly say I have never been more proud of myself in my entire life."