This item number is correct for the OTO BUT...
NB the photo on this item is incorrect at the moment (Julia is wearing it currently) and so to see a photo of the actual literal OTO dress see item number 163579 the OTO is a navy & coral floral crossover dress, whereas the non-OTO is a multi, swirly print short dress with a V neck and a royal blue border at the hem! Stirling work as ever by the Q web team! Double check before you order - they may put this right before the OTO airs (unlikely).
edit - Julia was wearing the OTO dress during the Gatineau hour earlier you can see (the top half) in the video currently showing for
this Gatineau item