Found this on Sankaku Complex (which is NSFW), but I'm sure that's not where it originated from. Can't locate original source, though.
On a side note, does anyone else think Lux's breastplate is too big for her? [slayer-jinx-unamused]
ForgottenLuck1 votesnice
genya031 votesEither the artist made her boobs big or he's a pervert. [zombie-brand-facepalm]
Kuzja11 votesEither the artist made her boobs big or he's a pervert. [zombie-brand-facepalm]
It's probably just the chest plates
darkdill1 votesAgreed. She probably asked for her breastplate to be made that way so people think she's bustier than she actually is.
It's kinda like Cordelia in Fire Emblem Awakening. Her breastplate is a "sham".
YCitizenSnipsY1 votes"Either the artist made her boobs big or he's a pervert"
Some how I don't believe those two are separated.