Katrina, Vivek's Mission Mumbai

Actress Katrina Kaif, who is already creating ripples with the promos of Bang Bang, was spotted shooting for Phantom at Gateway of India in Mumbai.

She was seen on a navy vessel with the Indian flag on it.

Phantom, starring Katrina Kaif and Saif Ali Khan, is based on the consequences of 26/11 terror attacks in Mumbai.

The actress was seen shooting on waters in front of the Gateway of India, the same sea-route taken by the terrorists of 26/11.

Katrina was seen speaking on a walkie-talkie while playing her role of a secret agent

Katrina was dressed in a navy blue suit and a jacket for the shoot.

Katrina heads back after completing her shot.

Elsewhere in the city, actor Vivek Oberoi celebrated his birthday with children battling cancer.

Vivek, who is the Brand Ambassador of Cancer Patients Aid Association (CPAA), happily poses with the children.

The actor also signed autographs for his little fans

Vivek, whose birthday was on September 3, cut the cake along with children a few days later.

Vivek sported a party hat along with other kids.

Coming Up: Surprise! Surprise! Hrithik, Vivek are Here

Bollywood actors joined in to throw a surprise birthday party for celebrity hairstylist Aalim Hakim, planned by his wife Shano on August 25 in Mumbai.

Bang Bang actor Hrithik Roshan surprises birthday boy Aalim and gives him a warm hug.

Aalim cuts the cake and feeds his wife Shano as Hrithik cheers on.

Actor Vivek Oberoi and his wife Priyanka also attend the celebrations. The couple poses with Aalim and his wife.

Director Imtiaz Ali sports a tee with Aalim's graphic on it, as he poses with Aalim and choreographer Bosco Caesar.

Actor Bobby Deol attended the bash in a black shirt and blue jeans, happily posing with Aalim and Shano.

Coming Up: Big B, Rekha, Sridevi at Rakesh Roshan's birthday bash

It was a star-studded evening in Mumbai when actor Hrithik Roshan with sister Sunaina organised a grand 64th birthday party for father Rakesh Roshan on Friday (September 6, 2013).

Family portrait: Hrithik with sister Sunaina (on the left), mother Pinky Roshan and filmmaker father Rakesh Roshan.

Megastar Amitabh Bachchan, who came with Sahara chief Subroto Roy, was one of the special guests at the party.

Veteran actress Rekha who has featured in Rakesh Roshan's movies like Khoon Bhari Maang, Koi Mil Gaya and Krrish, was elegant in a white sari.

Hrithik and Rekha have a candid chat.

Actress Sridevi was chic in a LBD.

Shilpa Shetty, stunning in a shimmering top and black trousers, was accompanied by husband Raj Kundra.

Hrithik's wife Sussanne Roshan was in full on party mode in a floral dress.

Looks like Hrithik made sure the photographers click a good picture.

Actress Juhi Chawla pretty in a cream coloured suit, with husband Jai Mehta.

Dharmendra greeted Amitabh Bachchan upon arrival.

Actor Farhan Akhtar came with wife Adhuna, sister Zoya and mother Honey Irani.

Farhan and Big B exchange pleasantries at the party.

Actor Rishi Kapoor pose for the shutterbugs.

Actor Vivek Oberoi, who will be seen in Rakesh Roshan's upcoming film Krrish 3, poses with wife Priyanka.

It was a surprise to see actress Ayesha Jhulka at the party.

Actor Jeetendra came with wife Shobha Kapoor.

While Sonakshi Sinha was nowhere to be seen, her mother Poonam Sinha and brother Luv were in attendance.

Sussanne's brother Zayed Khan was dapper in a suit.

Lyricist Javed Akhtar and actress Shabana Azmi were colour coordinated.

Actor Anil Kapoor at the party.