Yakovlev is a crazy good artist. (Just wanted to get the fanboying out of the way)
And recently he posted this image:
post #664406
Which if you look, in the sword that Luna is holding. There is a reflection of another pony. - Celestia
The tagging of Celestia was easy enough but anyone who knows Vakovlevs work knows this is from an older picture.
The reflection of Celestias face on the blade comes from post:
post #335235
Therefore technically this new post is an addition to the old one. (sorta like a comic/pool but with only two images a pool is useless)
Should they be in parent/child format because of this connection?
Updated