This sentence should be reviewed. I used "alto" and it was wrong because the right way is "alta". There's no way to know if it's masculine or feminine with this sentence. Of course, red shoes kind of imply it is a woman, but not totally.
Not many men wear red shoes that make them much taller, haha.
wonderful post - you argued yourself out of your complaint :) Kneel before the DL mistress
"alto" was accepted for me.
I agree with bassomega.