Glamorous Affair: BLACKPINK’s Rosé, Rosie Huntington-Whiteley, and Lauren Santo Domingo Dazzle at Tiffany & Co. Celebrates the Launch of Blue Book 2026: Hidden Garden Collection in NYC
Celebrities never fail to deliver breathtaking fashion moments that effortlessly demand attention and create waves across the internet.
On Thursday, April 16, 2026, Tiffany & Co. hosted its ambassadors at the Park Avenue Armory theater in New York City to mark the launch of the Blue Book 2026: Hidden Garden High Jewelry line, which was designed by Nathalie Verdeille, Tiffany & Co.’s creative director and senior vice president. Several brand ambassadors arrived at Tiffany & Co.’s celebration for the Blue Book 2026: Hidden Garden collection, making a striking impression. Among them were Rosé of the South Korean girl group BLACKPINK, model and actress Rosie Huntington-Whiteley, and American magazine editor and socialite Lauren Santo Domingo.
This blog post explores the fashion choices of BLACKPINK’s Rosé, Rosie Huntington-Whiteley, and Lauren Santo Domingo at the Tiffany & Co. event commemorating the launch of the Blue Book 2026: Hidden Garden Collection. Keep reading to see how these Tiffany & Co. ambassadors wowed the crowd with their outfits, and check out Fashonation Bellah Kwamy for more amazing celebrity fashion moments.
1. BLACKPINK’s Rosé: Ethereal Elegance

Roseanne Park, also known as Rosé, attended Tiffany & Co.’s event commemorating the launch of the Blue Book 2026: Hidden Garden high jewelry collection at the Park Avenue Armory, wearing a two-tone gown from the Khaite Fall/Winter 2026 collection, designed by creative director Catherine Holstein and shown during New York Fashion Week in February 2026.
The gown featured a sleeveless spaghetti-strap semi-sheer lace camisole top with a square neckline and exquisite floral embroidery that captured the essence of a hidden garden in full bloom. Her look also included an oversized black velvet bow at the waist, a white A-line pleated maxi skirt, and Saint Laurent “P.A.R.I.S.” leather slingback sandals with an exaggerated pointed toe and a lacquered metal stiletto heel.

Rosé, a K-pop sensation, accessorized her already stunning appearance with eye-catching Tiffany & Co. Blue Book 2026: Hidden Garden High Jewelry collection pieces, including a necklace, bracelet, and unenhanced pink sapphire and diamond ring.
3. Rosie Huntington-Whiteley: Modern Glamour

Rosie Huntington-Whiteley, 38, an English model and actress, attended the Tiffany & Co. event as the brand’s ambassador to celebrate the launch of the Blue Book 2026: Hidden Garden high jewelry collection, looking wonderful as ever.
She wore a white strapless The New Arrivals İlkyaz Özel Noélie satin column gown with crystal accents at the sweetheart neckline, adding a touch of shine to her exquisite silhouette. It featured a fitted bodice and a floor-length hemline.
Rosie finished her look with Aquazzura So Nude white satin slingback strap sandals with a 105 mm stiletto heel and embellished Tiffany & Co. pieces from the 2023 Blue Book: Out of the Blue High Jewelry collection, designed by creative director Nathalie Verdeille.

Her jewelry collection includes earrings, a necklace, a bracelet, and a ring composed of 18K white gold set with blue cuprian elbaite tourmaline. These exquisite accessories were the cherry on top, enhancing her already stunning presence at the event.
3. Lauren Santo Domingo: Vintage Charm

Lauren Santo Domingo, artistic director of the Tiffany Home category, was captured arriving at the Park Avenue Armory to attend Tiffany & Co.’s celebration of the launch of Blue Book 2026: Hidden Garden high jewelry collection. She looked breathtaking in a vintage Christian Dior sleeveless gown made of green extensible silk and elegantly embroidered with shimmering gold threads, capturing attention and admiration alike.
The gown, designed by John Galliano while he was creative director of Dior, included a spaghetti strap top with a draped cowl neckline, a corset-style bodice, and a flowing maxi skirt with a thigh-high slit, which added a striking element to her ensemble and drew attention as she moved gracefully throughout the event.
Lauren Santo Domingo finished her vintage-inspired look with The Row bare sand ankle-strap satin sandals with rounded toes and a long, thin heel, which she styled with Tiffany & Co. accessories.

Her selection of jewelry comprised yellow cushion-cut drop earrings, a Jean Schlumberger 36-stone bracelet in 18-karat gold and platinum adorned with round brilliant diamonds, and a yellow diamond ring from the Urchin chapter of the 2025 Blue Book: Sea of Wonder high-jewelry collection.
The Tiffany & Co. Blue Book 2026: Hidden Garden High Jewelry celebration was truly exceptional, highlighting not only a stunning jewelry reveal but also standout fashion moments on the red carpet from Rosé, Rosie Huntington-Whiteley, and Lauren Santo Domingo. So, who was your favorite celebrity at the event? Rosé of BLACKPINK wore a semi-sheer lace gown by Khaite, Rosie Huntington-Whiteley appeared in The New Arrivals Ilkyaz Ozel Noelie embroidered satin column gown, and Lauren Santo Domingo chose a vintage Christian Dior silk gown.
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