Sydney Sweeney's NSFW moment during Euphoria wedding wasn't a mistake, costume designer reveals

Sydney Sweeney has had some seriously NSFW moments in the latest series of Euphoria, but fans thought one wedding moment was a mistake.

The costume designer for Euphoria has now revealed that the reveal was definitely intentional for Cassie's wedding to Nate, played by Jacob Elordi.

Fans received another eyeful thanks to Sweeney's bridal gown revealing more than she might have hoped, and fans thought the slip was accidental.

Over the series, Cassie has done some seriously wild things to pay for the wedding of her dreams, including seemingly dressing up as an adult baby, puppy play, and indulging in 'sploshing' as a adult content creator.

Despite her efforts, the big day didn't go to plan, as fans witnessed in the latest episode of the smash-hit show.

Sweeney was clad in a custom corseted gown designed by Jackson Wiederhoeft for the event.

Sydney Sweeney wore a revealing dress as Cassie for her wedding to Nate (HBO)

HBO costume lead Natasha Newman-Thomas told InStyle that the revealing slip was prepared for: "Sydney kept having nip slips," she confessed.

"I was like, 'Okay, we're not going to tape her in. We're going to embrace it.' And I was like, We're going to make custom pasties out of the same hand-beaded fabric and embrace the nip slip because that's so Cassie."

As the dramatic episode came to a close, a blood-stained Cassie was seen crying her eyes out and the dress slipped down, revealing toe decorative pasties.

One fan wrote: "Cassie saying she’s not having a ghetto wedding and having her whole nipple pasties out in her wedding dress," as another agreed: "Right when i saw that i was like????"

This viewer added "Cassie got an ill fitting boob situation going on even on her wedding day... oh I'm sure."

Cassie and Nate had a grandiose wedding and fans were surprised by her outfit (HBO)

Newman-Thomas said she designed the dress to be perfect for the character: "We really wanted her to feel special. And I wanted to make the most beautiful, sexy wedding dress with just the slightest touch of tackiness because it's Cassie.

She said it had to be 'the most', because that's the character's nature, through and through, saying it reflected the sort of bride who wants it all, 'the high slit, the beading, the huge 15-foot train'.

"Best case scenario, I think you're dressing as a form of self-expression [for your wedding day], but there is a scenario in which you're dressing as revenge and as a form of trying to outdo everyone, it was more about doing the most," said the designer.

One fan who got the memo wrote: "It was meant to be cringe, the whole wedding was tacky and all over the place to represent who Cassie is lmao. She doesn’t know herself."

Mission accomplished for the designer.