If you are teaching how to describe a person’s physical appearance, there are a lot of authentic resources out there – and most of them can easily be used, even with beginners!
One of my go-to sources for this sort of thing is dating websites. Of course you should preview them before sharing with students, but there is a lot of great stuff out there that is entirely student appropriate. I really like adopte un mec because it’s a fun, quirky site – you stick the guys in your shopping cart! Their site is like a typical shopping site with specials and ads each week. You do have to make an account to get access to the descriptions, but I’ve had one for a couple of years and never set up my profile, so it’s not a big deal. They do have girls on the site as well, so you can get the masculine and feminine adjectives in there!
Another site is the Police Nationale’s Facebook page. They post missing persons ads that are pretty descriptive. They also tend to be very up to date with newer vocabulary than the typical hair/eyes/height that you so often see in textbooks!