Last year I took a trip to New York City with my girlfriend and reenacted the famous V-J Day kiss by a sailor and nurse in Times Square.
I did an image search on google for the Life magazine cover of the famous kiss and download it.
I then took the photo of me and my girlfriend and uploaded it to PhotoScissors Online where I removed the background and left just us kissing.
Then I used Fotor to put the Life magazine photo in the background and pasted the cutout photo of me and my girlfriend into the shot. It was a little choppy but the best I could do with a free online photo editor.