Katrina Kaif and Salman Khan finally came face to face and shot for their first ever item song together! The item song "Aaya re aaya bodyguard..." was shot at Film City where Katrina and Salman grooved together and this will be the title montage.

Katrina was seen rigorously rehearsing her steps for the song as she wanted it to be as perfect as 'Sheila ki jawaani' or even out do herself (with Salman).

Sources say that it was co-producer Atul Agnihotri and wife Alvira's idea, who are close to her, to ask Katrina to do an item number for the film to which she immediately said 'Yes'.

The chemistry between the two is said to be sizzling and the shoot was filmed quite smoothly.

Interestingly, Salman's real life bodyguard Shera makes his on screen debut with this item song and will be seen dancing and doing an acting bit with Salman and Katrina (as Katrina's Bodyguard).

And since Shera was facing the camera for the first time, he was a bit nervous during the song. Luckily, his two co-stars, Salman and Katrina eased his discomfort, with Salman even helping him rehearse his dance moves.

"Yes, I was a bit nervous but Bhai (Salman) and Katrina were very supportive. I can't thank him enough for the opportunity he has given me", says Shera, whose real name is Gurmeet Singh.

Salman's brother-in-law Atul Agnihotri, who's also co-producing the film, says, "The shoot of the song was sensational and very high on energy", adding, "Shera was a little apprehensive about his act and dance steps, but Salman and Katrina urged him on. Salman even helped him with his dance steps to ease the tension. Katrina was also encouraging him to perform well. It will be refreshing to see them together on the big screen".

'Bodyguard' is a romantic action film starring Salman Khan and Kareena Kapoor. Directed by Siddique, the film is a remake of the director's 2010 Malayalam film of the same name.

After 'Wanted' (2009 Eid release) and 'Dabangg' (2010 Eid release) Salman's 'Bodyguard' is all geared up to release this Eid on 31st August, 2011.