Dwayne Johnson celebrated his Jumanji co-star Karen Gillan’s birthday with a heartfelt and humorous message, sharing a behind-the-scenes video from the set of their upcoming film.
On Friday, November 28, the 53-year-old actor—fondly known as The Rock—posted a clip on Instagram showing the cast and crew surprising Karen with a birthday celebration. In the video, Johnson leads everyone in a cheerful birthday song while Kevin Hart nervously holds a cake, sparking playful reactions among fans.
Calling the Scottish actress “cool,” Johnson wrote, “Happiest of birthdays to the one and only @karengillan.”
He added, “So cool we could celebrate you on your special day from our set of Jumanji.”
Never missing a chance to tease his longtime friend and co-star, Johnson jokingly wrote, “I was hoping the cake would make Kevin explode like he does in our film – but no such luck.”
He wrapped up the post with, “HBD KG!! We love ya.”
Karen responded warmly in the comments, saying, “Awww thanks DJ! Love you guys! PS—I never know what to do with my hands during the Happy Birthday song.”
Fans flooded the post with laughter, poking fun at Kevin Hart’s visibly tense expression while holding the cake. One follower wrote, “Kevin looks so terrified of the cake.” Another added, “Why does Hart look scared holding the cake?” while a third joked, “Is the cake too heavy or is Kevin afraid of it?”
Meanwhile, the highly anticipated Jumanji 4 is set to hit theatres on December 11, 2026, with Johnson, Gillan, and Hart all expected to reprise their roles.