The 58-year-old former actress, who left Hollywood in 2002 and has not walked a red carpet since 2010, appeared unrecognizable while shopping in Los Angeles.
Once revered as one of the most glamorous women of the 1990s, Fonda opted for casual clothing and no makeup for her latest outing.
Her relaxed look caused a stir online, with many comparing her current appearance to her hot on-screen role in.
But Fonda has shown that even the most glamorous stars go through changes over the years, and she joins a growing number of former pin-ups who are confidently embracing their age and putting personal comfort above audience expectations.