Watch : You'll Marvel at Rihanna, A$AP Rocky's Spider-Man Party for Son Riot's 3rd BirthdayRihanna and A$AP Rocky are having a hell of a time. After all, the Fenty Beauty founder and "Sundress" musician celebrated their son Riot's third birthday with a Spider-Man-themed party surrounded by all of their loved ones. Rihanna and A$AP know with great power comes great responsibility when it comes to parties, with a red-and-blue archway adorned with Spider-Man balloons and Riot's name greeting guests in an Aug. 1 Instagram Story posted by the "Umbrella" singer's sister-in-law Nadia King. The couple kept the afternoon as sweet as ever with a cake bar, including flavors like cookies and cream, vanilla, strawberry and red velvet. A$AP—donning a white T-shirt, a blue snapback under a vibrant scarf tied over his head and sunglasses—sang "Happy Birthday" to their toddler as Rihanna moved his cake onto the table.