Even the brother model from the other questio?

I am really confused by the word 'sig' - i thought it was some kind of singular pronoun, but it's not at all?

On one occasion I accidentally wrote 'har pa sig' and was told I should have written 'ha pa sig'...now I've just been told the precise opposite. Can anyone tell me which is correct? (or are they both correct?). Thanks.

How would 'The models wear the green dresses' be then?

In previous questions , "model" is not represented by huma being but by small cars, planes, trains and so on. i think duolingo should replace theese by a human