Katrina, who features in the second half of the song "Aaya re aaya bodyguard', was uncomfortable when she was asked to blow six whistles in the song. She couldn't whistle at all!
But Salman helped her out, tells a source from the sets.
In fact, it was Salman, who blew the whistle for Katrina in the song. The two continue to share a warm relationship despite parting from each other.
"Bodyguard", which features Kareena Kapoor as the leading lady, releases Aug 31.
