Jiah, 25, was found hanging at her flat in Sagar Sangeet Building in the posh Juhu area on Monday night around midnight. No suicide note was found in her room.
With moist eyes, family members and close friends buried Jiah at around 2 PM at Juhu crematorium.
Celebrities like Aamir Khan's wife Kiran Rao, Riteish Deshmukh, Aditya Pancholi with son Sooraj, actor Raza Murad, TV actress Urvashi Dhokalia and others were present.
It is learnt that Aamir Khan, with whom Jiah starred in 'Ghajini', visited her residence last night.
Jiah was reportedly in a relationship with Sooraj Pancholi, son of actor couple Aditya Pancholi and Zarina Wahab. She was heartbroken after a failed relationship with him which possibly drove her to commit suicide.
Sooraj and Jiah spoke over telephone a number of times on Monday before she ended her life, sources had earlier said.
Jiah's mother and sister had gone out and she was alone at the house when she took the extreme step.
Both Sooraj and Aditya were questioned by the police in connection with the case.
According to Jiah's mother, the actress was depressed after having been rejected at an audition in Hyderabad. She wanted to pursue a career in interior designing as she wasn't happy with her film career graph.
Jiah shot into the limelight in 2007 with her debut movie 'Nishabd' in which she starred opposite megastar Amitabh Bachchan. She got a Filmfare Best Debutant nomination.
She later worked in Aamir Khan's 'Ghajini' and Akshay Kumar's 'Housefull'.
Born and raised in London, Jiah, also known as Nafisa, had shifted to India to pursue a career in acting.