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Nicole Richie

Michael Buckner/WireImage.com

Happy birthday, Nicole Richie!

The mother of two turns 30 today and ironically, her life today is far more simpler than when we first met her years ago as Paris Hilton's BFF on The Simple Life.

And no one can say Nicole didn't live it up in her 20s. From rehab and DUIs to dancing on tables, she certainly earned a reputation as a wild child way back when.

But these days, the former party girl is a wife, mother, designer and even a humanitarian...

In addition to launching her own fashion and jewelry line, Nic launched the Richie-Madden Children's Foundation to help disadvantaged kids.

Speaking of kids, she has her hands full with her own brood, daughter Harlow and son Sparrow.

On top of all of that, she's returning to the small screen, too, as a judge NBC's new reality series Fashion Star.

So what does the girl who has everything wish for on her 30th birthday?

Just 10 bucks, apparently.

"My grandma better step it up this year & give me a 10 dollar bill for my birthday tomorrow!" she tweeted last night.

Here's hoping you get all your B-day wishes!

PHOTOS: Fashion Spotlight Nicole Richie