David, you beat me to it, I was going to point that out about Arianna being Evangiline Lilly.
I think Riley looks like Jessica Biel. Not exact, but I don’t think any of Mihelle’s characters are exact. Pretty close, but not exact. Carefully examine each face of each product and compare to the real life actress. They are never 100% exact.
Aeryn is a perfect example. Several think that’s Amanda Tapping for some weird reason when it’s not, it’s ASHLEY GREENE! After very careful comparison of their faces side by side, it’s Ashley Greene and not Amanda Tapping. Similar hairstyle, pale skin, even has a Vampire option for the eyes (and to my knowledge, Amanda never played a Vampire but Ashley has).
So, speaking for myself, Riley doesn’t have to be dead on in order to be Jessica Biel. She looks like her enough for me to instantly recognize her as the actress.