In this candids video of Barbara Palvin trying on swimsuits (worth watching on its own merits, obviously), you get a couple glimpses of a certain familiar one-piece that doesn't seem to have made it into the 2018 issue.
Yep, it's the same suit Judit Masco wore in 1991. (It's literally the same brand and everything: Keiko.)
Maybe they didn't use it because it was the wrong retro decade?
See you when 2019 starts to ramp up.