As a young child, Angelina’s daughter’s appearance was notably quite masculine.
In 2010, Angelina confirmed to Vanity Fair, “She likes to dress like a boy.
She wants to be a boy.

So we had to cut her hair.
She likes to wear boys' everything,” (viaGlamour).
It refers to a virtually makeup-free appearance that is reminiscent of many popular European fashion trends.

The photo in question depicts her taking a stroll after a shopping spree with sister Zahara Marley Jolie.