According to documents obtained by PEOPLE, Appleton cited "irreconcilable differences" as the reason for separation
According to Los Angeles divorce documents obtained by PEOPLE, Appleton cited "irreconcilable differences" on Monday with a date of separation as Nov. 10. The documents also show that a postnuptial agreement is in place.
"Ring finger where the rock is," the White Lotus star, 28, captioned a series of photos on Instagram showing the couple exchanging vows earlier this year.
The final video in the Instagram carousel featured the newlyweds, who stayed at the Wynn luxury hotel and casino, standing with champagne glasses on a stage as Shania Twain serenaded them to her hit "You're Still the One."
Their Vegas nuptials, including a behind-the-scenes look at how it came together, just appeared in last week's episode of The Kardashians on Hulu. Appleton even revealed that his engagement ring from Gage was made from the caviar tin that they shared on their first date.
The episode also captures the moment when he asks Kardashian to officiate the wedding, which she makes a joke about since she's been married and divorced three times. She tells him, though, that she's honored to be with him and Gage on their big day.
Over the past six months of marriage, Appleton and Gage have stepped out at a number of events together and even rang in Appleton's 40th birthday with a lavish boat trip in Turks and Caicos over the summer.
Appleton and Gage have not yet publicly addressed their split. Reps for each did not immediately respond to PEOPLE's request for comment.
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