Olivia Culpo and her sister Sophia are once again battling for fashion.
In an exclusive clip from Monday’s episode of The Culpo sistersshared exclusively with PEOPLE, the sisters fight over a Devon Windsor bikini, which Sophia, 26, allegedly “stole” from Olivia.
In the car with their parents, Susan and Peter, the former Miss Universe films Sophia for an Instagram story, asking her to show off her outfit, which includes the bikini top layered under a white button-down.
Yet what started as a fun social media post has turned into a face-to-face fashion.
“Are you really going to try to figure it out when I stole your bikini,” Sophia asks pointedly.
“You did steal my bikini,” replies Olivia, who was planning on wearing the item that day. “I texted Sophia this morning and said, ‘Did you steal my white and gold Devon Windsor bathing suit?’ She just doesn’t answer me,” she told her mother and father.
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It seems the two asked the Victoria’s Secret model for the same swimsuit.
Sophia defends herself by claiming that her Devon Windsor pieces “disappeared”, but were later found mixed in with Olivia’s in their “gift room”, hence the confusion.
“If I was really a bitch, I would tell you not to wear my things,” Olivia says after explaining that she opened the box addressed to her and placed the bikini in the room where it suddenly disappeared.
“You are a bitch!” Sophia answers.
In her confessional, the former Miss USA student, 30, can’t believe how much the “joke” has turned into a fight.
“I know that bathing suit doesn’t belong to her. I know I unwrapped it. I know I put it on the bed where she stole it. I know it’s mine,” says Olivia.
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Closet jumping is a common occurrence among Culpos.
In a previous episode, Aurora regularly visits Olivia’s closet to borrow a cardigan, only to be presented with a padlocked wardrobe – a consequence of their clothing selections.
“I honestly thought we would share everything“Sophia admitted after discovering her sister’s drastic measures to protect her clothes.
“Stealing” clothes from each other is a family affair. The Culpo matriarch later admitted that she occasionally takes her sister’s clothes, pinning her as “the youngest in the family” and sympathizing with Sophia.
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The family drama continues over dinner when Sophia opens up to her older sister Aurora about how to handle communication issues at work, like being too “cold” over text. And Olivia offers advice to her big sister that isn’t well received.
“Somehow Olivia gets involved and turns this into a situation where I’m a problem. [It’s] just realities of two different people trying to work together that just don’t fit well. No one is at fault, no one is doing their job properly,” explains Sophia.
look The Culpo sisters on TLC Mondays at 9 p.m. ET/PT. The episodes are available to stream on Discovery+ the same day.