Cher got her hands and feet immortalized in cement last night in Hollywood -- but all eyes were on her short dress!

Wearing a crazy short, tight black number, the "Burlesque" star showed off her gams at her Chinese Theater ceremony -- which was attended by son Chaz Bono and even the 64-year-old's mom, Georgia Holt.

Her ensemble was so short, at one point she ever flashed the crowd -- don't worry, she was wearing underwear and quickly recovered.

Check out all the ceremony shots above.

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