On the homepage of events, you can create a new event and see all the events you are in

Once you click on an event, you can see your friends' outfits, like, comment, add your own outfit, leave the event

If you click on a certain friend's outfits, you can see them picture by picture, and like and comment

If you click the + icon on the second screen, you'll be prompted to add your own outfits, either from the categories you've already made or a new categroy