Rihanna and A$AP Rocky throw epic birthday bash for their eldest son RZA: Inside slime-filled party for the 4-year-old

Rihanna and A$AP Rocky reportedly rented out an entire slime themed museum to host their eldest son's birthday party. Check out videos from the event.

Rihanna and A$AP Rocky certainly know how to throw a party! To celebrate their son RZA’s fourth birthday, the couple hosted a fun-filled kiddie bash complete with colourful balloons, an elaborate birthday cake, and a whole lot of slime!

Rihanna and A$AP Rocky hosted a grand birthday bash for their son RZA. (AFP)

According to Page Six, Rihanna and A$AP Rocky hosted the celebration at Sloomoo Institute in Soho – an immersive slime experience in New York City – to mark their eldest son RZA’s birthday with close friends and family. The couple reportedly rented out the entire venue, turning the popular slime museum into the setting for a lively and fun-filled evening.

Inside RZA’s fourth birthday bash

Photos and videos from the celebration have surfaced on social media, offering a glimpse into the many activities and attractions planned for the evening, with the celebrity parents enthusiastically joining in alongside the children. The bash featured custom slime-making stations, interactive installations, and the venue’s iconic “Sloomoo Falls,” where guests could fully immerse themselves in – and get drenched by – cascading slime.

Rihanna attended the celebration alongside A$AP Rocky and their three children – birthday boy RZA, 2-year-old Riot, and eight-month-old Rocki. No additional A-list celebrities were reportedly present at the intimate gathering. The Diamonds singer arrived in an oversized white T-shirt layered beneath a tan jacket, paired with baggy cargo trousers. She completed the relaxed yet stylish look with oversized sunglasses, a gold chain necklace, white ballet flats, and a brown leather handbag.

A$AP Rocky looked dapper in a long camel trench coat layered over a grey T-shirt, black jeans, and shiny black combat boots, completing the outfit with eye-catching jewellery. Meanwhile, photos shared by fan accounts captured Rihanna fully embracing the festivities as she joined the children at the slime waterfall. One image showed the singer standing beside a child wrapped head-to-toe in protective plastic moments before being drenched in slime herself. Additional clips from the party showed guests singing “Happy Birthday” to RZA, along with glimpses of an elaborate colourful slime-themed cake featuring a giant fondant number “4” and “RZA” written across it in bold, vibrant colours.

Rihanna, A$AP Rocky and their kids

Rihanna and A$AP Rocky first sparked dating rumours in 2020 after years of collaborating together in the music industry, before making their romance public later that year with a series of loved-up outings. In 2022, the couple announced they were expecting their first child and soon welcomed their son RZA in May, shortly after shutting down brief breakup rumours.

Rihanna later surprised fans during her Super Bowl LVII halftime show performance in February 2023 by revealing her second pregnancy, before quietly welcoming their son Riot that August. The singer announced her third pregnancy while walking the red carpet at the 2025 Met Gala, and later that year, she and Rocky became parents of three after welcoming their first daughter, Rocki, in September 2025.