Rihanna and A$AP Rocky celebrated their son RZA's fourth birthday on May 13 with an extravagant party at the Sloomoo Institute in New York City, a venue famous for its interactive slime activities. The event was attended by close friends and family, featuring custom slime stations and immersive games that kept both kids and adults entertained. One of the highlights was when Rihanna joined the children under the venue's signature 'Sloomoo Falls', where guests could get drenched in colorful slime, earning cheers from attendees. Photos from the event captured the joyful atmosphere, including RZA standing beside a stunning birthday cake adorned with a giant number '4' and a slime bucket crafted from fondant. The venue was decorated with extravagant balloon arrangements, enhancing the festive vibe. Rihanna and A$AP Rocky, who arrived with their three children, coordinated their outfits, with Rihanna accessorizing with oversized sunglasses and a stylish handbag. This celebration follows their previous grand birthday bash for RZA, held at the Color Factory last year, showcasing the couple's commitment to making their children's milestones special.