Happy Birthday! Miley Cyrus Celebrates Turning 19 With Hollywood Party

Get the scoop on teen star's bash with family, friends and beau Liam Hemsworth

By Marc Malkin, Brett Malec Nov 23, 2011 8:16 PMTags
Miley CyrusBarry Brecheisen/Getty Images

What's a 19-year-old girl to do for their birthday?

If you're Miley Cyrus, you party it up at a big Hollywood party with all your celeb pals.

Oh yeah, and a unicorn! Huh?

Read on for all the birthday bash details...

The erstwhile Hannah Montana star rung in her last bday as a teen with a decidedly more adult bash last night at the Hollywood Roosevelt hotel.

According to a source, Cyrus' beau Liam Hemsworth, Kelly Osbourne, Victoria Justice, AJ and Aly Michalka, dad Billy Ray, mom Tish and sister Brandi were just some of the partygoers inside the private soiree held inside the Beacher's Madhouse club.

Party-planner Osbourne wasn't lying when she promised us there would be lots of "madness and craziness" at the party. At one point during the night, we spotted a unicorn strolling around outside the event! Of course it wasn't a real magical creature. Just a horse with a horn attached to its head.

"It's intimate, but it's going to be the sickest thing she's ever seen in her life," Osbourne teased yesterday just hours before the big bash. "That was my mission for her, to make her birthday...the best day ever."

And sure enough, Cyrus tweeted today: "Can't thank @MissKellyO for the best partyyyy ever! =]]]] i loveeeee you! Let's just say there was a unicorn in the lobby!"