The Cheers actress explained on Twitter how she had taken a few tumbles after getting caught up in perfecting her latest routine with professional partner Maksim Chmerkovskiy.
She wrote yesterday: "Ok... I fell down three times today dancing.. Once off the stage like Lady GaGa!!! But then.... There was that beautiful Tango... Ahhhhhhhh (sic)
"Problem was I forgot to eat today... Got so into the Tango I just forgot.. Blood sugar dropped and so Did I... Lol."
Despite taking a fall or three, Alley stated that she was satisfied with how the dance had turned out, gushing: "I feel great!!!!! I love our Tango... IRS the Argentine Tango ... Very passionate dance..."
Alley previously suffered a dancefloor mishap during the fourth week of the ABC show, when her shoe fell off in the middle of a routine.
Alley recently spoke of her desire to "dance in a movie" or appear on Broadway after the show's conclusion.
Watch Kirstie Alley's latest Dancing With The Stars performance below.