Sydney Sweeney is celebrating her birthday month a little early—with a new lingerie campaign.
The Euphoria actor, who turns 29 on Sept. 12, unveiled a retro-inspired campaign for SYRN’s upcoming Birthday Boobs collection. The capsule launches Sept. 1, 11 days before Sweeney’s birthday.
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In the campaign imagery, Sweeney wears a powder-blue floral lingerie set in a vintage-style kitchen. The photos and accompanying video use a playful birthday motif, with a refrigerator, glass milk bottle, cake, bows and floral details helping create a deliberately nostalgic look.
“Birthday suits look a little different around here,” SYRN wrote in its Instagram announcement, encouraging customers to sign up for early access before the collection’s Sept. 1 release.
The Birthday Boobs collection belongs to SYRN’s “Romantic” category and is expected to include bras, thongs, camisoles, matching sets and garter belts. Reported colorways include baby blue, baby pink and black, with bows, hand-drawn forget-me-not flowers and the brand’s first embroidered designs.
Some pieces feature a particularly personal detail: the phrase “I really love you,” rendered in Sweeney’s own handwriting. Reported prices range from $19 to $64, while the collection is offered from XXS to 3X and across 44 bra sizes.
🇺🇸 Sydney Sweeney filmed a birthday campaign for her own lingerie line SYRN... and it is not subtle.
She brought the cake, and the fans are eating it up.
Writer: Valhttps://t.co/WL5SfaBou0
— Mario Nawfal (@MarioNawfal) August 27, 2026
SYRN launched in January as Sweeney’s direct-to-consumer lingerie business. The brand initially emphasized four style “worlds”—Comfy, Playful, Romantic and Seductress—and offers 44 bra sizes, from 30B through 42DDD.
The new campaign continues Sweeney’s expansion beyond acting into product development and brand building. Since revealing SYRN, she has released small-batch collections rather than making a single, static launch the entire story.