Rihanna and A$AP Rocky pulled out all the stops to celebrate their son RZA’s fourth birthday with a colorful slime-themed party in New York City. The superstar couple reportedly rented out the Sloomoo Institute on Wednesday, May 13, turning the immersive slime attraction into a private celebration for close friends and family.
The event featured interactive slime-making stations, large installations, and the venue’s famous “Sloomoo Falls,” where guests could stand beneath a waterfall of slime. According to reports, the atmosphere was designed to be playful and family-focused, giving the children plenty of hands-on activities throughout the night.
One of the moments that quickly caught fans’ attention online involved Rihanna herself joining the kids under the slime waterfall. Photos and clips circulating on fan pages showed the singer dressed in protective plastic gear before getting completely covered in slime while guests cheered her on. The moment added a fun and relaxed vibe to the celebration and became one of the standout images from the party.
Videos shared from inside the event also showed guests singing “Happy Birthday” to RZA as he celebrated with family. The birthday cake reportedly matched the slime-inspired theme, featuring a large number “4” and a fondant slime bucket design. According to Page Six, the party also included elaborate balloon decorations that added to the over-the-top atmosphere of the event.
An insider described the celebration as “epic,” saying the family appeared to enjoy every moment. Rihanna and Rocky arrived at the venue wearing coordinated neutral-toned outfits alongside their children, including Riot, 2, and baby Rocki, who is just 8 months old. Rihanna completed her look with oversized sunglasses, ballet flats, and a brown handbag, while Rocky wore a camel trench coat layered over a gray shirt with black jeans and combat boots.
The couple has developed a reputation for creating memorable birthday experiences for their children. Last year, for RZA’s second birthday, they rented out the Color Factory in New York City, another immersive attraction known for interactive rooms and sensory experiences. That celebration reportedly included toys, slides, and a large ball pit for the children.
The latest birthday celebration reflects how Rihanna and A$AP Rocky continue balancing their global careers with family life. Despite both maintaining busy schedules in music, fashion, and business, the pair often prioritize creating private and meaningful moments with their children away from the spotlight.
Fans online also reacted positively to seeing Rihanna participate directly in the activities instead of simply watching from the sidelines. The singer’s willingness to join the slime-filled fun became one of the most talked-about parts of the event, with many praising the relaxed and family-oriented energy of the celebration.
