Assuming you mean Jubilee, that's partly why I love it. I never really looked at it as being from any specific decade (even if it practically screamed "80's"), I just always looked at it as Jubilee being eccentric and unapologetically herself. Even amongst a cast of colorful characters, she was a whole different level of colorful. Really added to that "misfit" feel that the X-Men are so known for.
Roberto's look I didn't really have any feelings for one way or the other. I feel like I remember some folks looking like that back in the 90's, but my memories could be way off. I know it's just supposed to be a jacket, but something about it reads more "windbreaker" to my mind.