The city of Kolkata was in for some visual delight as two beauties began to make rounds. They are the duo of Raveena Tandon and Arpita Pal. Both ladies were in town to promote their new film 'Laboratory' which is directed by Raja Sen. The film has already been released in the US and it is getting a very good response. While many were in awe looking at Raveena's original beauty, they are eager to see what the film carries.