I love Hilary Duff’s earrings in the first picture. Reminds me very much of Kendra Scott jewelry (which I actually heard about on Twitter from Hilary Duff) — http://www.kendrascott.com/. Those earrings may very well be by her — not sure!
Love her hair and outfit in the second picture. I love her sunglasses in the third picture! And I love her entire outfit in the next several pictures. I feel like her style is really unique — she wears a lot of different styles, but I love it. She always looks dressed up even when casual, and I love all of her shoes and accessories (and purses!!).