I would absolutely love it if we could get a simple costume for Barbie where he wears a single tie, giving out a small reference to Donkey Kong much like the silky head buns cosmetic references Chun-li from Street Fighter.
Thanks to your teams rendition of Barbie in Black i had a visual reference to go by for the ties shape and simply textured in the rest of the strap around the neck and gave the tie 4 different colors to visualize how it would look like if it matched the team you were playing in, if you were in green team the tie would be green etc. (to keep the in-game rendered shading of the tie for yellow i had to mute the saturation and brightness a little so it doesn't have to be this muted for yellow team if this tie changes color to which team you play in).
I'm surprised we didn't get a skin like this right away with Barbie and i believe its simple design is more then enough to be an innocent little easter egg then infringing too deeply onto someone else's copyright. I'll happily pay Nemo Bucks just to give Barbie a simple tie and I'll likely pay even more if there's some variants in different coats of color on Barbies fur as well.