Shah Rukh Khan

as Aman Mathur

Preity Zinta

as Naina Catherine Kapur

Saif Ali Khan

as Rohit Patel

Jaya Bachchan

as Jennifer Kapur

Sushma Seth

as Lajjo Kapur

Reema Lagoo

as Namrata Mathur

Athit Naik

as Shiv Kapur

Jhanak Shukla

as Jiya Kapur

Delnaaz Irani

as Jaspreet "Sweetu" Kapoor

Lillete Dubey

as Jaswinder "Jazz" Kapoor

Sulabha Arya

as Kanta Bhen

Anaita Shroff Adajania

as Geeta Parekh

Sonali Bendre

as Dr. Priya

Shoma Anand

as Kammo

Kamini Khanna

as Vimmo

Satish Shah

as Karsanbhai Patel

Ketki Dave

as Sarlaben Patel

Simone Singh

as Camilla

Dheepesh Bhatt

as Frankie Ramdayal

Rajpal Yadav

as Guru

Dara Singh

as Pritam Chaddha

Toni Vitale

as Va Va Voom Girl

Steve West

as Mike

Bev Reese

as Wedding Guest

Stefanie Samuels

as Bagel Vendor

Nadir Hasan

as Basketball Player

Michael Pinkhas

as Office Clerk

Andrew Vannata

as Jenny's Restaurant Customer

Sanjay Kapoor

as Abhay Malhotra

Kajol

as Special Appearance in "Maahi Ve" Song

Rani Mukerji

as Special Appearance in "Maahi Ve" Song

Anil Mehta

as Rajnath Kapur (uncredited)

Joseph Gatt

as Dancer in Club (uncredited)

Nikolett Lemmon

as Singer in Choir (uncredited)

Uday Chopra

as Day 6 Narrator (uncredited)

Farah Khan

as Jenny's Restaurant Customer (uncredited)

Karan Johar

as Jenny's Restaurant Customer (uncredited)