Rihanna and ASAP Rocky have once again proven they know how to throw a celebration fit for a rising star. On May 13, 2026, the power couple hosted an extraordinary slime-themed birthday party for their eldest son, RZA, who turned four years old. The event took place at the renowned Sloomoo Institute, a slime-themed interactive museum and play space that has become a popular destination for families seeking unique sensory experiences. The institute specializes in custom slime creations and immersive installations, making it the perfect venue for a child who loves hands-on, gooey fun.
The Venue: Sloomoo Institute
Sloomoo Institute, with locations in major cities like New York and Los Angeles, is known for its vibrant, colorful environments where guests can create and play with various types of slime. For RZA's party, the institute pulled out all the stops. A representative confirmed that Rihanna and ASAP Rocky reserved the space for a private event, transforming it into a wonderland of slime-filled activities. Custom slime-making stations were set up, allowing young guests to mix colors, textures, and scents to create their own personalized slime to take home. Interactive installations provided endless entertainment, and the highlight was undoubtedly the "Sloomoo Falls" – a cascading waterfall of slime where partygoers could immerse themselves completely.
The Slime Experience
The "Sloomoo Falls" is a signature attraction at the institute, and renting it for a private party is coveted. Clips from the event, shared on social media by attendees and quickly reposted by fan pages, showed RZA and his friends gleefully plunging into the slime fall, laughing and covered head to toe in the colorful goo. Rihanna, never one to shy away from getting messy, joined her children in the slime pit, creating what insiders described as a "Mom-of-the-Year" moment. She was seen laughing as she let the slime pour over her, clearly enjoying the experience as much as her kids. ASAP Rocky also got involved, his usual cool demeanor replaced by pure joy as he played alongside his family.
Beyond the slime falls, the party featured a birthday cake that perfectly matched the theme: a fondant slime bucket adorned with the number "4" and topped with edible slime dripping down the sides. The cake was a masterpiece of bakery art, appealing to both children and adults. The event also boasted "over-the-top balloon decorations," according to a source who spoke with Page Six. These included arches and sculptures in RZA's favorite colors, adding to the festive atmosphere.
Family Focus
Rihanna and ASAP Rocky are proud parents to three children: RZA, who just turned four, his younger brother Riot, and their baby sister Rocki, who is eight months old. The couple has been private about their family life but occasionally shares glimpses of their parenting journey. This birthday bash was a rare public display of their family dynamic, showing how they prioritize creating magical moments for their kids despite their demanding careers. Rihanna, a global music icon and businesswoman, has taken a step back from touring to focus on motherhood, while ASAP Rocky continues to release music and work on fashion projects. Together, they seem to strike a balance between Hollywood glamour and down-to-earth parenting.
The choice of a slime theme is particularly fitting for RZA, who, like many children his age, adores the tactile fun of slime. Slime has become a cultural phenomenon among kids in recent years, with DIY slime videos garnering billions of views online. By embracing this trend, Rihanna and Rocky showed they are in tune with their son's interests, no matter how messy. The Sloomoo Institute itself was founded by two entrepreneurs who saw the potential in turning slime play into an upscale experience, and it has hosted birthday parties for other celebrities in the past, including members of the Kardashian-Jenner family.
Background on the Couple
Rihanna, born Robyn Rihanna Fenty, rose to fame in the early 2000s with hits like "Pon de Replay" and "Umbrella." She has since become one of the best-selling music artists of all time, with numerous Grammy Awards and chart-topping albums. Beyond music, she built a billion-dollar empire with her Fenty Beauty cosmetics line, Savage X Fenty lingerie, and Fenty fashion house. Her relationship with ASAP Rocky (real name Rakim Mayers) began in 2020 after years of friendship and professional collaboration. The couple welcomed RZA in May 2022, Riot in August 2023, and Rocki in September 2025. Their family is often described as modern, stylish, and full of love.
ASAP Rocky, a rapper and songwriter, is known for his laid-back style and hits like "Fashion Killa" and "Praise the Lord." He has also ventured into fashion, serving as a creative director for various brands and releasing his own clothing line. Despite his tough stage persona, he has shown a softer side as a father, frequently posting pictures of his children on social media. The couple's commitment to co-parenting and sharing parenting duties has been praised by fans.
A Growing Family
With three children under the age of five, Rihanna and ASAP Rocky have their hands full, but they seem to relish the chaos. The party for RZA was a testament to their dedication to making each child feel special. Insiders revealed that the planning took weeks, and every detail was customized to RZA's preferences. From the custom slime fragrance to the music playlist curated by the parents, the bash was a labor of love. Other celebrity parents have followed similar trends; for instance, actress Kristen Bell and her husband Dax Shepard once hosted a slime-themed party for their daughters. However, Rihanna's ability to turn a simple kid's party into a viral sensation underscores her influence.
The festivities reportedly lasted several hours, with breaks for snacks and cake. The Sloomoo Institute's staff helped facilitate the activities, ensuring safety while maximizing fun. Attendees included close friends and family members, though the couple kept the guest list relatively intimate to avoid media frenzy. Nonetheless, paparazzi and fan accounts managed to capture glimpses, which spread quickly online. The hashtag RZABirthday trended briefly on social media platforms, with fans expressing admiration for the parents' effort.
Rihanna's involvement in the slime falls was particularly noted. As a mother of three, she has often spoken about wanting her children to have normal childhood experiences despite her fame. By getting messy herself, she reinforced that message, showing her kids that it's okay to let loose and have fun. The term "Mom-of-the-Year" was used by online commentators, a lighthearted nod to her hands-on parenting style. This contrasts with her glamorous red-carpet image, but it endears her further to fans who appreciate her authenticity.
The family of five continues to enjoy their time together, balancing their busy careers with parenting. Rihanna has been working on new music, while ASAP Rocky is preparing for a tour. But for now, the focus is on creating lasting memories for their children. As RZA grows older, he will likely look back on this slime-filled birthday with fondness, knowing his parents went above and beyond to celebrate him in the most "epic" way possible.
Source: The News International News