LOS ANGELES — Sydney Sweeney's latest campaign for her lingerie brand, Syrn, has fans focused less on the product and more on a small piece of jewelry: a gold necklace bearing the initials "SB," widely seen as a nod to her boyfriend, music executive Scooter Braun.

On Sunday, Sept. 27, Syrn's official Instagram account shared a new set of mirror selfies featuring the 29-year-old actress modeling the brand's Smooth Cup Demi Bra in a black shade called "After Dark," paired with matching underwear.

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"Syd selfies, starring the Smooth Cup Demi Bra in After Dark," the brand wrote in the caption.

In the images, Sweeney wore a dainty gold chain with pavé diamond "S" and "B" initials. Neither Sweeney nor the brand has explained the meaning of the necklace, but several outlets, including Fox News, noted that the letters match Braun's initials.

Not the first appearance

The necklace has become a recurring detail in Sweeney's recent campaigns. She wore the same piece earlier this month in a separate Syrn post promoting the same bra in a pale pink shade called "Babe."

"Send Nudes, now yours. Syd wears the Smooth Cup Demi in Babe," the brand captioned that post, part of a campaign released around Sept. 22 and 23.

Page Six previously reported that Sweeney wore pavé initials at the Stagecoach country music festival in April, though the outlet noted the letters could have other meanings.

For the latest images, Sweeney styled her honey blond hair in loose waves and wore smudged black eyeliner with a deep........

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