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Kevin Mazur/WireImage.com

Well, technically, it's tomorrow. But we wanted to be one of the first to send a shout-out to the Material Girl.

After all, this particular B-day's a biggie: Madonna's turning 50!

That makes her the newest Hollywood heavy in the Fabulous at 50 club, a superexclusive group of leading ladies who are just getting better with age. (Check out the gallery below.)

With her 11th studio album out this year and a world tour in the works, it doesn't seem like the iconic singer is slowing down yet—and that's why she rocks.

Congrats on the milestone, Madge!