Happy Birthday, Madonna!

The "Material Girl"singer celebrated her 56th birthday with an elaborate roaring 20's-inspired bash, complete with "Great Gatsby"-esque costumes, her famous (high fashion) friends and her adorable kids. 

Madge looked the belle of the ball in a beaded flapper dress and a sparkling headband. 

She took to Instagram to share a series of snapshots from the fun festivities, including cute candids of David, Mercy and Rocco.  

Rocco, 14,  looked dapper in a black-and-white blazer, while Mercy, 8, celebrated her mama by posing beside a giant "M."

0818_madonna_launch3David, 8, looked so grown up in a black and white tux, polka dot bowtie and matching top hat. "My escort for the evening! #swag #boom #livingforlove," Madonna captioned the cute pic of her son.

Can you believe how big the kids are now!?

The Queen of Pop also took to her social media site to thank fans for their birthday wishes with a retro topless photo of herself.

"In my Birthday suit! The girl cant help it! Thanks for all your good wishes!!!!" she wrote. 

Not many 56-year-olds would ring in their special day by posing nude, but Madonna's never been one to shy away from showing skin.

Party on, Madge!

Click "Launch Gallery" at the top to see more photos from her birthday bash, including pics with DSquared2 designers Dean and Dan Caten, Givenchy's Riccardo Tisci and Kate Moss.

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