Speculations of a brewing romance between Bollywood stars Ranbir Kapoor and Katrina Kaif have gained traction, after the pair was seen in the same car while on their way to Karan Johar's birthday bash last weekend.

During the party, Ranbir and Katrina danced together to a few numbers from his upcoming movie "Yeh Jawaani Hai Deewani". While the couple grooved to the tracks of "Balam Pichkari" and "Badtameez dil' till late night, Ranbir's ex-girlfriend and co-star in "Yeh Jawaani Hai Deewani" Deepika Padukone watched on.

Ever since Ranbir parted ways with Deepika and Katrina broke up with Salman Khan, rumours of them dating have been doing the rounds.

The two had met on the sets of 2009 blockbuster comedy "Ajab Prem Ki Ghazab Kahani, and since then have been often spotted hanging out together. Till now, the couple have obstinately denied being romantically involved.

According to various reports, Ranbir and Katrina have been spending a lot of time with each other despite their tight schedules. Recently, they were shooting on adjacent sets in Mumbai's Film City and when the actress found out that Ranbir was in the next studio, she quickly rushed to his set. Seeking to avoid any media attention, they went inside a vanity van parked behind the sets and chatted for almost an hour, keeping their shoots on hold.

During the maiden Times of India Film Awards (TOIFA) in April, there were reports that Ranbir had come to pick up Katrina from the Vancouver airport.

Dating rumours gained momentum after Katrina had arranged for a "special" dinner for Ranbir at her house. Since she was not sure what he wanted to eat in particular, she had reportedly placed orders for everything that he liked.