What happens to your wife schedule when you have four wives and it's your anniversary with one of them? Kody Brown would know.

Robyn's Ex-Husband Refuses To Give Up Parental Rights & Meri Brown Leaves 'Sister Wives?'

This week, Meri and Kody Brown celebrated their 25th anniversary and his newest wife, Robyn Brown, took to Twitter to wish them a happy anniversary.

"Happy Anniversary @realkodybrown and @MeriBrown1! 25 years! What an amazing journey! Here's to 25 more amazing years. I ♡ u two!" the sister wife wrote.

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Kody Brown posted a little throwback photo of the two when they first married. The star wrote on Twitter: "HAPPY 25th ANNIVERSARY! @meribrown1 This pick just after our honeymood. #meri&kodysilver."

That was only one of his tweets though. He also shared a more recent photo of the two accompanied by the text: "Happy 25th anniversary @MeriBrown1 !! Let's find all the magic we can in 25 more. I love you! #meri&kodysilver."

Another one of his four wives, Janelle, shared a photo of the two on their wedding day. "These 2 crazy kids are celebrating 25 years of marriage today! Here is to 25 more! @MeriBrown1 @realkodybrown," she wrote.

The photo showed Kody on his knee in a white suit, kneeling next to Meri who was wearing a traditional white wedding gown and veil.

Even though Meri is no longer Kody's legal wife, she seems to maintain positivity as she continues to post on Twitter.

"So many hopes & dreams for my future, now figuring out the steps to get there #OnMyWay #NotYet," she wrote.

TLC has not yet confirmed that Brown would be leaving the show, but speculation remains high.

Other sources are saying that Robyn will have to go head-to-head with her ex-husband in a legal battle to gain custody of their kids.

The source said that her ex-husband is going to "make it difficult for her to gain custody over their children."