The event was in association with Cancer Patients Aid Association (CPAA).
The "Badrinath ki Dulhania" co-stars were the show stoppers for designer duo Abu Jani and Sandeep Khosla. Varun and Alia walked the ramp and shook a leg to their latest chartbuster, "Tamma Tamma".
Shortly thereafter, Bachchan made a solo entry and walked the runway for Jani and Khosla. Later, all three of them along with the designer duo walked the ramp again.
Highlighting the importance to donate for causes like these, Bachchan said, "Charity exists through donation and we are here tonight to provoke, request and urge you with folded hands to make a generous contribution towards this cause.
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"It's a very sad sight to see a young child suffering from cancer and your donation can go a long way in giving an opportunity to these young souls to lead a healthy life," Bachchan added.
The actor also donated Rs 11 Lakhs to CPAA.
At the event, backed by Fevicol, Shaina NC also showcased her collection. Several celebrities like Disha Patani, Iulia Vantur and Ragini Khanna, among others walked the ramp.
Apart from them, Sussanne Khan and Sonali Bendre also walked the ramp.