Light blue jeans can be a bit tricky as they can easily make the skinniest person feel fat. Olivia obviously pulls it off great by styling it with heels, a statement necklace and some really cool shades.
Olivia's hair looks amazing in this pic from NYFW! I also really LOVE the Valentino bag (I have a slight obsession with Valentino in general). The top is Tommy Hilfiger, the skirt vintage and the shoes Tibi.