Earlier in the day, the star swapped her long locks for a layered chop and debuted the edgy new look on Instagram.
"Thank u @jenatkinhair 4 my killer new #haircut! I [love] it!" she captioned a shot of her and the stylist.
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She later headed out to the Hollywood Stands Up To Cancer Event with her husband Cash Warren.
The actress, 32, wore a white lace frock, vamping up the girly look with black sandals, a black clutch and deep berry lipstick.
The couple left their two daughters Haven and Honour at home as they attended the charity bash.