Madonna was treated to a surprise party on Wednesday (04Apr12) to celebrate her eighth number one on America's album chart.
The pop icon was left speechless after her tour crew transformed her rehearsal studio with flowers, balloons and a special cake in honour of her latest record Mdna debuting at the top of the Billboard 200 countdown.
In video footage of the party, a stunned Madonna can be heard asking, "What is this? Does this mean we have the day off?" as she walks into the room.
She later cuts a slice of cake and offers it to her manager Guy Oseary - before gleefully shoving it in his face and shouting, "That's for making me work so hard, motherf**ker!"
Madonna later told fans on Twitter.com about the bash, writing, "I swear I didn't know. I walked into rehearsal with 100 balloons and was confused. The thrill of being (number) 1 never goes away... Thanks for the support, its amazing, surreal, I'm in heaven. A million thank you's."
Oseary also tweeted, "Madonna was surprised today.. Everyone hid in the band room to surprise and celebrate her Mdna (number) 1 album."