Everyone in Bollywood celebrated the man who has become such an integral part of the industry.
On Karan Johar's 50th birthday on May 25, all his friends came over to Yash Raj Studios to party with him.
The theme was black and bling and the stars didn't disappoint.
Please click on the images for a look at the stars who came to Karan Johar's party.
IMAGE: Malaika Arora, *always* fashionable.
Photograph: Pradeep Bandekar
IMAGE: Ranveer Singh's the king of bling. He arrives without his wife, Deepika Padukone, who is walking on a very different red carpet.
Photograph: Pradeep Bandekar
IMAGE: Anushka Sharma sizzles in black. Hubby Virat Kohli -- whose team, Royal Challengers Bangalore, could make it to the IPL finals if they beat the Rajasthan Royals in tomorrow's qualifier -- couldn't help but comment 'wow' on social media.
Photograph: Pradeep Bandekar
IMAGE: Kajol and Karan have been friends through thick and thin.
Photograph: Pradeep Bandekar
IMAGE: Manushi Chillar takes a break from promoting her debut film, Prithviraj, to party.
Prithviraj, which stars Akshay Kumar as the Rajput king, is a Yash Raj production.
Photograph: Pradeep Bandekar
IMAGE: Mrunal Thakur, who starred in Karan Johar's first horror project, Ghost Stories.
Photograph: Pradeep Bandekar
IMAGE: Diana Penty doubles up the bling.
Photograph: Pradeep Bandekar
IMAGE: Janhvi Kapoor is among Karan's many star-kid proteges; he launched her in Dhakad, the Bollywood remake of Sairat.
Photograph: Pradeep Bandekar
IMAGE: Rani Mukerji arrives sans husband Aditya Chopra, who has thrown open the doors of Yash Raj Studios to host KJo's birthday bash.
Photograph: Pradeep Bandekar
IMAGE: Choreographer Vaibhavi Merchant.
Photograph: Pradeep Bandekar
IMAGE: Kriti Sanon, though yet to appear in a full-fledged KJo movie role, did show off her thumkas in Kalank's Aira gaira item number.
Photograph: Pradeep Bandekar
IMAGE: Sharvari will be seen opposite Aamir Khan's son, Junaid, in Maharaja.
Photograph: Pradeep Bandekar
IMAGE: Karan had launched Tara Sutaria in Student Of The Year 2.
Photograph: Pradeep Bandekar
IMAGE: Rohit Shetty, the other hit-maker of Bollywood, arrives.
Photograph: Pradeep Bandekar
IMAGE: Aadar Jain.
Photograph: Pradeep Bandekar
IMAGE: Brahmastra Director Ayan Mukerji gets ready to party.
Photograph: Pradeep Bandekar
IMAGE: Designer Surily Goel arrives with Seema Kiran Sajdeh, who starred in Karan's reality show, Fabulous Lives Of Bollywood Wives.
Photograph: Pradeep Bandekar
IMAGE: Tusshar Kapoor.
Photograph: Pradeep Bandekar
IMAGE: Sidharth Kapoor, who was launched in Karan Johar's Student Of The Year, has worked quite a bit with the filmmaker since.
Photograph: Pradeep Bandekar
IMAGE: Parineeti Chopra, who was Karan's co-judge on the talent show, Hunarbaaz, wears her best bling.
Photograph: Pradeep Bandekar
IMAGE: Siddhant Chaturvedi.
Photograph: Pradeep Bandekar
IMAGE: Akansha Ranjan made her movie debut in the Netflix film Guilty, which was the first production venture of Dharmatic, the digital arm of Karan Johar's Dharma Productions.
Photograph: Pradeep Bandekar
IMAGE: Vaani Kapoor shows off her best profile.
Photograph: Pradeep Bandekar
IMAGE: Tripti Dimri of Bulbbul fame has been signed up by KJo for DCA (Dharma Cornerstone Agency), which promotes budding talent.
Photograph: Pradeep Bandekar
IMAGE: Pranutan Bahl glows on the red carpet.
Photograph: Pradeep Bandekar
IMAGE: Say namaste to Badshah.
Photograph: Pradeep Bandekar
IMAGE: Ananya Panday, another KJo protege, was launched in Student Of The Year 2.
She arrives with Navya Naveli Nanda.
Photograph: Pradeep Bandekar
IMAGE: Ekta Kapoor.
Photograph: Pradeep Bandekar
IMAGE: Ekta's BFF Riddhi Dogra.
Photograph: Pradeep Bandekar
IMAGE: Tabu is also celebrating the success of her latest film, Bhool Bhulaiyaa 2.
Photograph: Pradeep Bandekar
IMAGE: Puneet Malhotra, who directed Student Of The Year 2.
Photograph: Pradeep Bandekar
IMAGE: Aditya Roy Kapur with his brother...
Photograph: Pradeep Bandekar
IMAGE: Siddharth Roy Kapur.
Photograph: Pradeep Bandekar
IMAGE: Farah Khan, always witty, had posted, 'All set for the MetGala of Lokhandwala !! @karanjohar s 50th! I don’t think i took so much time to dress up at my own wedding.'
Photograph: Pradeep Bandekar
IMAGE: Sophie Choudhry.
Photograph: Pradeep Bandekar
IMAGE: Karan Johar's childhood crush, Twinkle Khanna, arrives.
Tina -- which also happens to be the name of the character Rani Mukerji played in Karan's directorial debut, Kuch Kuch Hota Hai -- is Twinkle's pet name.
That's how much he loves her.
Photograph: Pradeep Bandekar
IMAGE: Karan's BFF Gauri Khan arrives with Maheep Kapoor, who also starred in Fabulous Lives Of Bollywood Wives.
Maheep and Sanjay Kapoor's daughter, Shanaya, is now being launched by Karan.
Photograph: Pradeep Bandekar
IMAGE: And there's Shanaya Kapoor -- looking lovely in black; she will soon be debuting in Bedhadak.
Photograph: Pradeep Bandekar
IMAGE: Ishaan Khatter, the star of Dhadak, returns from his bike trip to party with his mentor.
Photograph: Pradeep Bandekar
IMAGE: Shweta Bachchan Nanda.
Photograph: Pradeep Bandekar
IMAGE: And there's the birthday boy, Karan Johar.
Photograph: Pradeep Bandekar
