Vanity and Doom

I believe you are all acquainted with the story of Snow White and her wicked stepmother. But are you with Dorian Gray's, Oscar Wilde's masterpiece? Here's a poem to arouse your curiosity.

Vanity and Doom

"Mirror mirror on the wall
 Who's the fairest of them all?"
"You are full fair, queen, 'tis true
  But Snow White is fairer than you."

"How dare she?" - cried the queen
 Not hiding her anger within
"Bring me her heart bloody, still beating
  For I shall feast upon it willingly"

"Fair she is, but so's she doomed
 Soon her beauty will be ruined
 Time's no gentleman, spares no one
 So, compared to you, there'll be none"

"Mirror mirror, you are cunning!
 Likewise, my charm is waning"
"There's a way to make it last
  But 'tis costly" - warned the glass

"Tell me then, without delay
 For that any price I shall pay"
"You shall have your portrait made
  Unlike you, the picture will fade"

"'Tis so simple" - the queen was in awe
"Fetch me a painter who shall trace no flaw
 Preserved my complexion will forever be
 And nevermore there'll be someone fairer than me"

So, the queen had the same fate Dorian Gray did. Period.

What's the connection between Snow White's queen and Dorian Gray?
Are you a vain person? Can vanity be harmful? How so?
I'd really appreciate comments on this post. Best answer will get a prize.

XXX
S.