Madonna was left with a "tiny hangover" after celebrating her 59th birthday

She shared a picture on Instagram taken by photographer Mert Alas and captioned it: "I stand before this altar. with a small confession! ............. i have a tiny hangover. [wine emojis]. I'll have to Bend the knee! (sic)"

Mert had shared the picture on his own account on Madonna's birthday, along with a caption that referenced the lyrics to her song 'Like a Prayer': "When u call my name birthday girl @madonna #family #love #icon (sic)"

He also posted another picture from the same shoot of the iconic singer kneeling at an altar.

He captioned the black and white image: "When u call my name birthday girl @madonna #family #love #icon (sic)"

And Madonna shared the same photo and wrote: "Giving Thanks for another Year filled with many Surprises and many Blessings!(sic)"

On her birthday, Madonna - who raises six children, 20-year-old Lourdes, Rocco, 16, David and Mercy, both 11, and four-year-old twins Stella and Esther - poked fun at herself when she forgot the lyrics to her own song.

She shared a video of her singing along to her 2012 track 'B-Day' but messed up the words, so she captioned the clip: "When you can't remember the words to your own song.. Still a Happy Girl! (sic)"

She also urged her fans to support the efforts made by her Raising Malawi charity.

She wrote: "Celebrate my birthday by helping @RaisingMalawi give the gift of health and happiness to kids in Malawi!!! Support the #stocktheward campaign through link in bio. In July alone, the surgery team performed 78 life-saving operations. Thanks to all of you, the Mercy James Centre is up -- now let's keeping it running and #stocktheward!!! Are You With Me??(sic)"