Miu Miu neclkace Cartier Dior Reese looked totally adorable despite sporting a drab color in Brentwood today.

She's been wearing a lot of black lately. Is she still in mourning for her failed relationship with Jake Gyllenhaal? Or is she just sporting the grown-up look for her new (rumored) grownup relationship with agent Jim Toth, who's a full ten years older than Jake?