The "2 States" actor turned 30 on June 26. He took to photo-sharing website Instagram and shared a selfie of himself together with Ranbir, Ranveer and Karan.
Arjun captioned the photograph: "Epic boss! #PartyNight."
The actor shared another image in which "Aashiqui 2" star Aditya Roy Kapoor is seen along with the "Bombay Velvet" and "Band Baaja Baaraat" actors.
Ranveer, who shared screen space with Arjun in "Gunday", wished him by posting a photograph of the duo on micro-blogging website Twitter.
"Haila Baba, tera Happy Budday!!! Finally grown up...#notreally #HappyBirthdayArjunKapoor," he wrote along with the photograph.