Lucifer has 4 pairs of snowy white wings.
Well, had.
When he Fell, three wings burned, three broke off completely, and two were left tattered and mangled.
The bottom pair, just above his lower back and close to the spine, are jagged stumps about three inches long.
Above those, to the right is a scar. The wing ripped out entirely, leaving nothing but a hole. The left wing is a monstrosity of thin flesh stretched tight over a crooked skeletal frame.
The middle pair has remnants of feathers clumped together in random spots. Long stretches of bone and burned flesh are still visible.
The top pair are the most in tact. Small chunks of feathers are missing on the lower part of the right wing. The left wing is shorter than the right, because half of it was severed.