The number 3 one looks fairly short, but the only thing I can say from the other 2 is that it depends on your style. It looks a little but classic but I'd like it. And the nr 1 and 2 skirt are not inappropriate for a young girl. They're classy and attractive. I can imagine that if a grandmother would wear that outfit people would make a remark.
My girl & her sisters have a couple like the black one my girl and her sisters have only ever had one or 2 nasty comments from a horrible relative who thinks all girls should be like a girl from the from victorian times who is heard but not seen , her remaining family hate her and me , my partners sisters husbands were furious when she effectively called my girl and her lovely sisters sluts i took 45 mintutes to cheer my girl up afterwards and her sisters got comfort from their partners.
at the end of the day if its like @BellePepper says as long as its not too short and looks pretty/cute have fun and dont let anyone tell you otherwise.
It really depends on the length but to me none of them look inappropriate. It kinda depends on what the other people are wearing too. Like how revealing you are in comparison to the other girls at the event if that makes sense.
i think they are gorgeous. any lace piece attracts my attention, i have tonnes in my wardrobe lol, but i believe what makes or breaks a skirt is its length. i prefer skirts at the knee, slightly below or slightly above it.
Whoever told you that those sorts of skirts are 'inappropriate' needs to seriously lighten up. They're perfectly fine to wear for work, formal events or anything for that matter. I think they're lovely personally - decide for yourself what you're comfortable wearing and what you like/what suits you. Don't let other people dictate your dress.