Jake Paul and Jutta Leerdam made their first public appearance as an engaged couple on Wednesday ... and they put the Olympic speed skater's massive new accessory on full display.
The lovebirds hit the premiere for their new Max Original show, "Paul American," just now ... electing for all-black outfits after rocking white ensembles for the proposal in Saint Lucia.
Jake and Jutta also did some prom-esque poses ... proving they don't mind getting all mushy for the cameras (something they're used to at this point).