Charlize Theron Shaves Her Head for ‘Mad Max’

It almost seems like a mystery: Charlize Theron was photographed walking into a salon on June 6, and hasn’t been seen without a hat since. She wore a beanie to the gym over the weekend (a bit warm for summertime in L.A., no?) and stepped out with son Jackson on Monday, wearing a chic fedora (above).

But if you look closely, you can solve the puzzle: the actress’s long blonde locks are gone.

A rep for Theron confirms to PEOPLE that she shaved her head last week for her role as Furiosa in the upcoming movie Mad Max: Fury Road. The action film, which costars Tom Hardy, starts shooting next month in Africa.

Theron follows in the footsteps of Anne Hathaway, who recently chopped her hair for Les Misérables

Though Theron’s done a good job of covering up her cut so far — she had us fooled! — she’ll have to reveal that head sometime. And we’ll definitely be interested to see just how gorgeous she looks.