I drew my Teenage Cadence in some formal wear (her first Gala dress), just because. I tried to show that she has a somewhat darker/troubled personality through the dark colors and I picked earthy colors because she still very much considers herself the Pegasus raised by Earth Ponies she was rather than the Alicorn Princess that Celestia wants her to be.
 
I don’t know if that comes across but I think she looks pretty so I’m okay with that.
 
Also, again, the horn is absent because she typically hides her horn under her hair, she doesn’t feel comfortable with her horn showing. (though I should figure out a way to have it still looking like she has one I just haven’t yet)