It may be old news that Kat🐱 smooched Gulshan Grover in her debut 'Boom'💥, but there's more to the hot lip-lock💏 than what was seen on-screen. Gulshan, nervous😟 at shooting the scene, was practising kissing Kat😻 in a closed room, only to have Amitabh🌟 walk in on them! But Big B, being the charming man he is, cheered😽 them on, and this had Gulshan breaking into a sweat😓 all over again! But finally, when the director🎬 suggested Kat slide across the table and catch👕 Gulshan by the collar and kiss😘 him, it really broke him. But Kat being a complete professional👩💼, was not just sportive about it, but aced💏 the scene too!