I think he's naked? Though really that wouldn't make any sense. I watched the ending to get that screen shot and Vanille was clothed in her crystal. You can just barely see them, just like everyone else.
I knew this wouldn't be a hard and fast rule (eg I didn't know about Serah) but I was mainly thinking of the flashback when Vanille wakes up - clearly reforms naked and is deliberately covered in the right places, then clothes burn on, or something, yet when Lightning wakes in the end, clothes were always there...
Fang and Vanille remained in crystal stasis, but Lightning and the others awoken and were turned back into regular human beings.