Jennifer Lawrence is feeling blue again ... and still looking damn near perfect.

Everyone's favorite actress suited up as Mystique on the set of "X-Men: Days of Future Past" today and director Bryan Singer shared the first photo of her in her brand new costume.

J-Law previously said she'd be wearing a body suit this time around instead of paint, after skin irritations required a doctor to be called to set while filming the first movie.

The costume still looks like paint and prosthetic applications to us ... so, if this is indeed a body suit, they did a really good job!

And, is it just us, or does Jennifer look even skinnier this time around?

Check out more photos from the set above, including pics with Halle Berry, Patrick Stewart and Hugh Jackman!