Miley Cyrus, Kelly Osbourne celebrate Miley's birthday at AMAs - see the pic

miley-cyrus-birthday-amas-kelly-osbourne.jpg Miley Cyrus has had a big year, what with the twerking and joints and Robin Thicke of it all. And she wasn't even 21. That's ... kind of scary.

But the former "Hannah Montana" teenybopper turned 21 years old Saturday (Nov. 23) and on Sunday at the 2013 American Music Awards, she celebrated with pals Kelly Osbourne and Denika Bedrossian, the makeup artist responsible for Miley's AMAs look (above, left).

Osbourne captions the photo, "Celebrating @mileycyrus 21st birthday back stage at the #AMAS with @dendoll! Thank god she is finally legal!"

We aren't sure what will change now that she's "legal," but OK.

Miley's crying cat performance of "Wrecking Ball" also appears to have garnered some feline attention, as she retweeted the below picture. Now that's funny.

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Photo/Video credit: Instagram, Twitter
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