Jay-Z, GQ Party

Lester Cohen/WireImage

Wonder what a hip-hop superstar feels like on his birthday? Pretty frickin' gangster, we'd imagine.

Jay-Z is celebrating his 42nd birthday today, and the guy has got it goin' on.

Between being married to Beyoncé and gearing up to be a daddy, Hov continues to dominate the music charts now with his Kanye West collaboration, Watch the Throne. And as if that weren't enough, he was named "King" for GQ's Men of the Year.

That's more than enough things to toast to.

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