PHOTOS: From Aamir, Aishwarya, Hrithik, Akshay to Deepika, Katrina, Ranbir, Sonam; Bollywood celebs at Karan Johar's STAR-STUDDED BIRTHDAY BASH!

Bollywood actor Varun Dhawan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Varun Dhawan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Tiger Shroff during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Tabu during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Interior designer Sussanne Khan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sushant Singh Rajput during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sridevi's daughter Jahnavi Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sooraj Pancholi during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sonam Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood filmmaker Goldie Behl with his wife and actor Sonali Bendre during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Shahid Kapoor arrived sans wife Mira[PIC CREDIT: Manav Manglani]

Bollywood actor Saif Ali Khan's daughter Sara Ali Khan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017

The gorgeous star kid opted for a short white dress for KJO's bash

Bollywood actor Sanjay Dutt with his wife Manyata Dutt during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sanjay Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sanjay Dutt during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sanjay Dutt during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Samir Soni with his wife and actor Neelam Kothari during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Raveena Tandon during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actors Ranbir Kapoor, Aditya Roy Kapur and Arjun Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actors Ranbir Kapoor, Aditya Roy Kapur and Arjun Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Rana Daggubati during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Neha Dhupia during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Varun Dhawan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Fashion designer Manish Malhotra during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Malaika Arora Khan arrived with her girl gang

Bollywood actor Kriti Sanon during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

It was the most happening event in B-town on Thursday as the new dad of Bollywood Karan Johar celebrated his 45th birthday. The event was truly a star-studded bash with the creme-de-la creme of Bollywood from Aishwarya Rai Bachchan, Shah Rukh Khan, Aamir Khan, Ranbir Kapoor to Katrina Kaif, Deepika Padukone, Alia Bhatt and star kids Sara Ali Khan & Jahnvi Kapoor in attendance

Bollywood actor Katrina Kaif during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Katrina Kaif during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood filmmaker Kabir Khan with his wife and actor Mini Mathur during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Sridevi's daughter Jahnavi Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Jahnvi looked gorgeous in her shimmery off-shoulder outfit

Bollywood actor Sridevi's daughter Jahnavi Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

PIC CREDIT: Manav Manglani

Hrithik Roshan too graced the star-studded bash

Bollywood actor Harshvardhan Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Farhan Akhtar during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood filmmaker Farah Khan during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood filmmaker Ekta Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Tiger Shroff's rumored girlfriend Disha Patani too graced the event

Karan greeting Deepika inside his house

Bollywood actor Deepika Padukone during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Chunky Pandey during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Bobby Deol during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Athiya Shetty during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Arpita Khan along with her husband Aayush Sharma during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actors Ranbir Kapoor, Aditya Roy Kapur and Arjun Kapoor during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)

Bollywood actor Anushka Sharma during filmmaker Karan Johars 45th birthday celebration party in Mumbai, India on May 25, 2017. (Pravin Utturkar/SOLARIS IMAGES)