A photo of the dolls dressed in the same publicity still outfits as the actors, began to emerge on Twitter on Tuesday.
The image shows Kaif's figure wearing a version of the orange three-quarter-length Manish Malhotra coat seen in official stills.
A doll in the likeness of Khan can also be seen mimicking designer Shiraz Siddique's styling, with a hooded black jacket and a guitar.
The original photograph of the lead actors was taken in Hyde Park during the first week of the UK schedule of the upcoming romance.
In 2011, Kaif became the first Bollywood actress to have a Barbie doll made in her likeness, later appearing at a fashion event wearing the doll's outfit.
YRF opted to release a limited number of images of the shoot, following unofficial video and photo leaks of the actors, and a clapperboard revealing the film's title.
Anushka Sharma and Anupam Kher also star in Yash Chopra's latest directorial venture.
London Ishq is scheduled to release Diwali 2012.