Originally Posted by roach
The events of First Class was the founding of the cinematic X-men. Hell they were in the blue and gold early costumes.
Wearing costumes doesn't mean anything and the label X-Men was only brought up when Moira was talking to Prof X. They didn't wear those uniforms because they've called themselves as X-Men.
"This is our chance to make a difference" - Sue Storm - The Invisible Woman
"He's stronger than any of us but he's not stronger than all of us" - Reed Richards - Mr. Fantastic
"We could these powers to help people" - Johnny Storm - The Human Torch
"You can't fix this, nobody can" - Ben Grimm - The Thing