I am really digging the austere yet innocent expressions that you and your sister are working, not to mention the juxtaposition b/w different styles and extremes still both parallel in fringed rich hair and jewel-like eyes.
The rest of the models' figures and outfits are left out of the picture due to the self-shot nature, but from what is hinted its definitely complementary of healthy qualities. There's also association of your recent series' "positive style" in bright colours, atmosphere and clear camerawork, which is awesome.
Anyways this is a charming portrait, I think you should do more shots together with such themes of Light and Dark dichotomy. Really Love it!
Gosh, you two are gorgeous. I started following your sister before, just loving her hair and photos, and now that I know it was you taking them, I followed you. You both are gorgeous, you have great artistic talent and photography talent. I'm so jealous!