Princess #4: Aurora. Since she's hardly ever portrayed in official artwork without it, I decided to give her her tiara. Unfortunately, her hair is obscuring where her saddle would be, but imagine it this way. The saddle is the same shape as the the previous princess, but the saddle is either majority blue with a bit of pink (in the case of of the one with the blue heart bridle) or majority pink with a bit of blue (in the case of the one with the pink heart bridle).
I wasn't happy with the profile images I found for Owlowicious, so I used the same owl from Sleeping Beauty.