This star brought out the bling for the Fourth.

Kim Kardashian sparkled in a custom diamond necklace worn as a belly chain as she attended Michael Rubin’s star-studded Fourth of July white party in the Hamptons Monday night, wearing the dazzling jewels as she accidentally ended up twinning with Kanye West’s ex-girlfriend, Chaney Jones.

The “Kardashians” star, 42, put a new twist on the Messkika diamond necklace she originally wore at the 2023 Time 100 Gala in April, with the chain featuring a 17-carat pear-shaped diamond along with a rope of other smaller stones.

According to the jeweler, the piece was originally intended to be worn as either a belt or a necklace, and the Skims founder took advantage of its versatility to accent her tiny waist for the celeb-filled July 4 party.

She paired the chain with a sheer white Alaïa crop top ($1,860) and matching skirt with ribbed detail, wearing the necklace above the low-slung bottom.

Meanwhile, her ex-husband’s former flame, 24, attended Rubin’s party in the dress version ($4,320) of the same look — although word is still out on whether the two ran into each other.

The Skkn by Kim founder — who claimed on Twitter that she took nearly a dozen shots at the boozy bash —  revealed her Alaïa outfit in a pre-party TikTok on Lori Harvey’s account, dancing, strutting and drinking with sister Kendall Jenner and pals Harvey, Hailey Bieber, Lala Anthony and Justine Skye.

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One user on the KUWTK Snark Reddit forum questioned Kardashian’s Y2K accessory, writing, “Kim is really trying hard to make the year 2000 belly chain a ‘thing’ again.”

“Belly chains definitely are a thing again, imo they’re cute when they’re styled right. So not like this,” another quipped.

“Belly chains ARE a thing again,” one fan wrote in defense of Kardashian. “Very Y2K lol.”

Clearly Kim loves the two-for-one sparkler.