Mumbai, July 4 (IANS) As Parineeti Chopra graced the famous 'Koffee With Karan' couch with Aditya Roy Kapoor, she hilariously revealed that she gets extremely nervous around fellow actress Katrina Kaif.In a pure fangirl moment, Parineeti called Katrina her idol, adding that she is a huge admirer of her calm and composed personality.Sharing a particular incident, Parineeti said, "That day, she (Katrina) came to the gym, and I quickly increased the speed of my treadmill."Then Katrina came to her a