We’re accustomed to seeing Angelina Jolie in her usual neutral palette of grays, beiges and blacks, so when she stepped out in a stunning yellow gown for the Ocean’s 13 premiere in Cannes, we just had to know more. Turns out that she started working on it with Emanuel Ungaro’s chief designer Peter Dundas “a little more than a month ago,” an insider tells PEOPLE. Dundas sent her a batch of sketches from which she chose the gown and the color. So no luck for the rest of us in getting one, since “the dress was made especially for her — it’s unique.” But the custom design didn’t end with the gown — Chopard created ten carat yellow diamond earrings and a 20 carat yellow diamond cocktail ring just for her appearance on the red carpet. At least to our impressed eyes, it’s effort well spent!