Katie Maloney has filed for divorce from Tom Schwartz.

Sources confirm that the "Vanderpump Rules" star filed at the Los Angeles Superior Court on Tuesday after first announcing the split on March 15 on Instagram.

Maloney wrote,

"I never thought I would have to make an announcement like this. But I feel it's important that I'm open about my life with you. After 12 years on an adventure through life together Tom and I are ending our marriage. This ending is not met with resentment or animosity, no sides to choose. We have deep admiration for one another that will always remain and we cherish our friendship. Although we may be on different paths we will continue to love and support one another's happiness. Thank you for all the kind words and support."

Schwartz also took to Instagram with a heartfelt message, stating,

"Well this sucks. How am I supposed to capture twelve years of love in a f–in canned Instagram caption. I'm not quite ready to use the 'D' word bc it's too painful. Yes my heart aches but I'll be ok. Fully respect Katie's decision and we've had healthy, productive conversations about it. It would be far sadder if she decided to stay with me whilst not happy."

He shared that they "had some of the most blissful, romantic, fun times humanly possible over the course of our relationship" and that Maloney has "taught me so much about love & being a better partner."

Rumors of the breakup first surfaced earlier in the week when Maloney was seen on her Instagram without her wedding ring.