In Uncanny Avengers #27, Johnny Storm aka the Human Torch flames off. Now, before the big fight Johnny, was wearing civies, his shirt was burned off but somehow his shorts are miraculously undamaged. Damn that Indestructible Pants trope! (Unstable molecules, I know) But at least we still got shirtless Johnny.
January 3, 2018
Warren Warthington's powers have been gone though some changes lately. He basically has too forms. As Angel he usually appears shirtless, wear just plain pants, while as Archangel he turns into his blue-skinned, metal-winged self. Obviously these scans from Astonishing X-Men #1 feature his Angel form.