Rihanna and A$AP Rocky celebrated their son RZA’s 4th birthday with a blowout bash in New York City.

The proud parents threw the fun fête at The Sloomoo Institute in Soho, Page Six confirmed.

A source told us that the “Diamonds” singer and rapper “rented out the entirety” of the popular slime museum for the evening.

We’re also told that the party was “filled with their family and friends”— including their two other kids Riot, 2, and 8-month-old Rocki — but there were no additional A-listers in attendance.

The event “included over the top balloon decorations,” the source said, noting that the kids in attendance were “playing at the different slime attractions, including Sloomoo Falls, the DIY Slime bar, and Groov’s Groovy Grove.”

The insider shared that the family had the “most epic” time at the interactive party.

“The kids spent time exploring the different slime vats and creating their own custom blends at the DIY bar,” the source added.

Rihanna and the “F—in’ Problems” artist were spotted entering the downtown hotspot joined by their trio of children.

The “Umbrella” singer, 38, wore an oversized white T-shirt layered under a tan jacket. She paired the look with baggy cargo pants.

She accessorized with oversized sunglasses, a gold chain necklace, white ballet flats and a brown leather purse.

Rocky, 37, looked dapper in a long camel trench coat over a gray tee, black jeans and shiny black combat boots.

The Dior Homme ambassador also carried a caramel tote bag and was blinged out in jewelry.

The father of three entered the establishment Wednesday night carrying their youngest child in a baby carrier, shielding Rocki’s face with a cozy blanket. The birthday boy and his brother coordinated in colorful ensembles.

Rihanna and Rocky first sparked dating rumors in 2020 after years of collaborating on music together. That November, they took their love public and with several romantic outings.

Two years later, the pair announced that Rihanna was pregnant and they were expecting their first child.

They were momentarily rocked by breakup speculation in April 2022, but they put the rumors to rest, and a month later they welcomed RZA.

In February 2023, Rihanna shocked the world when she announced that she was pregnant again during her Super Bowl LVII halftime show performance. She secretly gave birth to Riot that August.

Rihanna revealed her third pregnancy in May 2025 while walking the red carpet at the Met Gala.

She and Rocky became parents of three when they welcomed their first daughter in September 2025.