there's a theory that celebrities are just actors who have a script given to them by the elite to push certain agendas. they then later "kill" characters, from the world stage to traumatise and hurt the public. a few honourable mentions are, megyn kelly was nicole brown simpson. natalie la rose was aaliyah. lady gaga was amy whinehouse. i think the same could be true of kpop idols but i've never heard it be talked about. this may be the case with celebrities who are alive "playing" different characters. selena gomez is lucy hale and the list goes on.
they often won't look 100% the same because that would be too obvious but they'll make tweaks to certain features to throw you off.
this may also explain why there are so many look a likes in the entertainment industry, including kpop.
william shakespeare said "all the world’s a stage, and all the men and women merely players; they have their exits and their entrances; and one man in his time plays many parts"
there's a family guy episode that exposes this: