The 29-year-old explained to fans she accidentally hit her face against a piece of furniture at home.
"I woke up from a nap SO fast, I whacked my face on a table," she wrote, adding the hashtag "idiot."
In another photo, the former Bachelorette posed with a small bandage close to her eye and joked that the injury would cause problems on set of Home and Away.
"The show's continuity dream. A random unexplained black eye. Sorry team," she wrote in the caption.
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Sam first gained popularity appearing on The Bachelor in 2014. She was chosen as Blake Garvey's winner, only to be unceremoniously dumped by the Bachelor for second-runner up Louise.
A year later, Sam appeared as Australia's first ever Bachelorette.
This article appeared on New Idea.
