Tensions were high between Sydney Sweeney and Maude Apatow's characters — sisters Cassie and Lexi Howard, respectively — during the huge, blow-up fight in the 'Euphoria' season two finale, but behind the camera the vibe couldn't be more different between the actresses, both 24. The two have been inseparable since meeting four years ago on the hit HBO series. "Everyone knows that if I'm not in my trailer, I'm in Maude's or if Maude's not in hers, she's in mine," says Sweeney, featured alongside Apatow in this year's Beautiful Issue. ["She's] the sister I always wished I had."

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