Despite her lapse in memory, the star continued to dance and sing as friends accompanied her in the background.
"When you can't remember the words to your own song," the Material Girl captioned the clip. "Still a Happy Girl!"
The pop star celebrated turning one year older with multiple parties, including a bash in Italy on Tuesday which Madonna entered on a white horse.
She also shared a shot of her twin daughters, Stella and Esther, donning matching party dresses to celebrate the occasion. One of the girls accessorized with a fake mustache and bandana while the other opted for a beaded necklace and a hat.
In a photo posted on Wednesday, Madge posted a photo of herself and reminisced on the past year.
"Giving Thanks for another Year filled with many Surprises and many Blessings!" she wrote