New Delhi: One of the most talked about couples of Bollywood, Ranbir Kapoor and Katrina Kaif have kept their alleged relationship under covers for long. However, their equation is now an open secret.
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Ranbir who is busy shooting for Karan Johar's 'Ae Dil Hai Mushkil' in London celebrates his birthday on September 28.
Well, Ranbir's birthday seemed like London calling for Katrina as she was spotted with him in the city, reports suggest.
Reports further suggest that the couple was clicked together where Ran-Kat looked crisp and suave. Love is certainly in the air, else Katrina wouldn't have flown to London for RK's birthday!