Rihanna and A$AP Rocky marked a special milestone in their family’s life this month as they celebrated their son RZA’s fourth birthday in a vibrant and memorable way. The couple transformed New York City’s Sloomoo Institute into a slime-filled wonderland on May 13, 2026, inviting an intimate gathering of close family and friends.
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The Sloomoo Institute, known for its immersive experiences and slime-making stations, was the perfect venue for the occasion. Guests enjoyed a variety of interactive exhibits and the renowned “Sloomoo Falls,” where they could delight in the experience of being drenched in slime. An insider shared that the event included “over-the-top balloon decorations” to enhance the festive atmosphere.
In a standout moment that could easily earn her the title of “Mom of the Year,” Rihanna, 38, joined the children beneath the famous slime waterfall. Photographs from the event captured the joyous scene, detailing how the singer was engulfed in the playful chaos as guests cheered and took part in the fun. One notable image showed her beside a child also decked out in plastic gear, both poised to take on the slimy waterfall.
Videos shared on social media showcased the celebration further, revealing guests singing “Happy Birthday” to RZA, complemented by an extravagant birthday cake. The cake featured an elaborate design, complete with a fondant-created bucket of slime and a prominent large number “4,” symbolising RZA’s big day.
Rihanna and A$AP Rocky, 37, arrived at the celebration dressed in coordinated neutral-toned outfits. Their son RZA was accompanied by his younger siblings, Riot, aged two, and Rocki, an eight-month-old baby. Rihanna completed her look with oversized sunglasses, white ballet flats, and a chic brown purse, while Rocky sported a camel trench coat over a grey T-shirt, paired with black jeans and combat boots.
The celebrity couple’s approach to their children’s birthdays has been consistently lavish, with past celebrations demonstrating their commitment to making every occasion memorable. For RZA’s second birthday in 2024, they organised a delightful party at the Colour Factory, another interactive venue that features a variety of colour-themed rooms and sensory experiences. That event included exciting activities like toys, slides, and a ball pit, making it another unforgettable day for the family.
This year’s planning appears to have exceeded their previous celebrations, with reports suggesting it was one of the most epic parties yet. An inside source affirmed that the family had an incredible time at the Sloomoo Institute, underscoring their desire to create lasting memories for their children.
Both Rihanna and A$AP Rocky are known for their elaborate style, and this party was no exception. Their choices for the event showcased a keen sense of fashion that aligned perfectly with the joyous spirit of the day. As they celebrated their son’s early childhood milestones, they also highlighted the importance of family and togetherness.
As RZA continues to grow, the couple’s efforts to make each birthday special suggests a deep commitment to nurturing their children’s joy and creativity. With each passing year, they seem to raise the bar, ensuring that celebrations are not only enjoyable but also foster a sense of wonder and togetherness. Rihanna and A$AP Rocky’s dedication to their family life is certain to inspire many as they navigate the joys of parenthood in the public eye.