I created this “cartoon” image using Gimp. If you can imagine starting with an ordinary wedding photo, that’s what I started with on this image. Then I messed with the colors a little bit, then used the “Cartoonize” plugin, then did a Gaussian Blur on the background a couple of times. I probably did some other things, but that’s what I can remember doing. (FWIW, I’m the tall one in the middle.)
To be clear, the “Cartoonize” effect is a Gimp plugin. It does not come with the standard Gimp installation.