As I have reached the 1910s in my game, I'd figure I might as well post the looks for one of the girls here at this point:
Everyday wear:
https://blogger.googleusercontent.com/img/a/AVvXsEhr8ap-bjjKBBtzb_ApX7NfTW0QjsHI-0L5opT0Vg5cVLXpO0kWC42g8W3TEbugcXYWFcpGOf65vc-yR2fC1tkMpOVuVH4TpUZzmTrfUw2hkLpwo9-or0JV9ShQxWL7MnXBhWmRlcKhlMirBHNX-fZYECO7FOOclK5pSLJXrC3fApeSjl80krlIqqSo2yhv=w640-h384
I really like the modest dress for the 1910s. It has the right silhouette and with the flowers it fits into the more art nouveau style of the time, hinting at the art deco to come. The second look is more a work/studious look, inspired by men's clothes. I use the shoes from the vampire pack a lot still, I think they work well in this decade too.
Formal and sportswear:
https://blogger.googleusercontent.com/img/a/AVvXsEh0H9R2MjkcnrIS1tkq6thnyI-5ylC2u195Njq9lJvq4vZrMDcS4L4fowEA0K1BvrbRV2gIHB_pJFfodh4l5UNlhIVltUwOxDHdw7TUKHUu6GeFBsPnyYG-MwtmXZFjltiJICGg5K7k5qNg90tZdn8liqUhDW-2mttJ1w1K64oBQ17RrThPQhi7GrInX7gy=w640-h408
For the formal wear, I really love this as an alternative to the other edwardian outfit in game. It's sleek, filled with flowers and lace. I think it works well. As for the sports outfits I really love the skirt from the Incheon-pack for athletics wear, it's a sort of tennis-inspired outfit as tennis was very popular. I've made one outfit like this entirely in white too. The second sports outfit is for the rider, or the mountain climber or the exploring woman, the closest thing to bloomers I could find in game.
Sleepwear, swimwear and cold-weather wear
https://blogger.googleusercontent.com/img/a/AVvXsEhgGuAmSnXjnuKtt3k7ucjWY5dOiDR8zfgW0i-KuunRfLx81dicsV20MJJLdVa92zvKNp-Lx8fG85MtzP_rA3nkKe2VPEQYVuYJXM5gTfkJxydcQYSi6Od-ldsHLkYxD-LgFds9jftLXRu7tZi_h27IeDXmTGYvMMa7Bcxdi9MI1024McrW0_d4a3HmYAJa=w640-h406
Here I used several of the same ones that you @Ashubii, your outfits has been really inspirational. The sleepwear is the same as you had for 1890-1919, and the cold weather wear is what you used for 1920s, although I thought it fit well here too. The swimwear is the closest i could find to the swimming dresses of the time.