While we have several love link ups flooding Bollywood, here is an unusual couple claiming their brother sister relationship coming out of nowhere! Yes! Our Barbie doll Katrina Kaif and Ishaqzaada Arjun Kapoor reportedly claim to be brother and sister! Whoa....wondering where has this popped from? Well, before speckling if they are siblings from different mothers, here's a breather to this story! A dig through the past reveals that around 6 years back, Katrina had jokingly tied Rakhi to Arjun during one of their casual encounters on the sets! But well, now having suddenly erupted this humorous past during Arjun's successful phase in Bollywood, the actor further chooses to clear the air stating that it was just a joke and Katrina is no cousin to him! Well, seems like our Bhai is getting serious...Try chilling like Salman na....Nonetheless, do tell us what do you think of Arjun-Kat relationship in the comments section below and meanwhile, don't forget to subscribe to Moviez adda