Bollywood actress Katrina Kaif has recently joined Instagram and was welcomed with open arms by the B-Town biggies. Be it Salman Khan, Shah Rukh Khan, Varun Dhawan, Alia Bhatt or Karan Johar, the tinsel town is going gaga over Katrina's entry on the Instagram. And the latest one to welcome her is none other than Arjun Kapoor. Arjun posted an old picture of him with Katrina. That was a picture of those days when Arjun used to be fat and chubby before joining the industry. He captioned the picture with, "Next to the stud on the left is this girl who's now on Instagram... she's apparently quite popular these days @katrinakaif check her account out and maybe follow her even..." On the work front, Arjun will be next seen in Half Girlfriend with Shraddha Kapoor. The film is slated to release on May 19, this year.