The party was attended by various celebrities, including Shah Rukh Khan, Aishwarya Rai Bachchan, Katrina Kaif, Karan Johar and Kiran Rao.
In the next couple of weeks, the couple were spotted going out on several dates with Priyanka Chopra even going as Nick Jonas' plus one for his cousin's wedding.
The Quantico star wore a attractive red sari dress, while Jonas complemented her in a classy blue suit. Cricketer Sachin Tendulkar and wife Anjali attended the bash as well.
The 35-year-old Quantico actress posted two pics to her Instagram Story featuring Nick, 25. She was seen clad in casual outfits like a black camisole teamed with a pair of jeans or a shirt-jeans combo. After PeeCee, it was B-Town's new couple Ranbir and Alia who grabbed the utmost attention.
Posting a sneaky picture of the backs of Nick and another man, whom other sites have identified as her brother, she shared the caption, "my favourite men" with the heart eye emoji. The "Bharat" star looked stunning in a Tarun Tahiliani lilac saree with lace.
Rumours are doing rounds that the couple will be engaged before we know it.