Demi Lovato Celebrates Her 19th Birthday With Red Bull, A Glam Rock Theme & A Skyscraper Cake!

Fri, August 19, 2011 6:30pm EDT by 4 Comments

A very changed Demi Lovato stepped out Aug. 18 to celebrate her 19th birthday at private party in Hollywood!

Close to a year after Hollywood was stunned by the news that almost-19-year-old Demi Lovato was in rehab to deal with “emotional and physical” issues, she shined in a silver spiked Marco Marco shoulder dress,  sober and happy at a joint birthday party for her and current BFF, Sober is Sexy designer, Hanna Beth Merjos.

Held at the exclusive Beacher’s Madhouse club in Hollywood, Demi and Hanna Beth’s party was an alcohol free celebration with a glam rock twist Aug. 18. Guests weren’t admitted unless they had glammed up to get down and an open Red Bull bar was available to keep everyone’s energy going through the night, reports People.

There were two birthday cakes (Demi’s was a skyscraper!), photos of Demi and Hanna Beth covering the walls and a celebrity guest list that included, Derek Hough, Tiffany Thornton, Hunter Parrish and Samuel Larsen — who tweeted his excitement about the party.

“Off to celebrate the birth of @ddlovato in party form #partymonsters,” he wrote.

A source told People.com that Demi was having a blast.

“Demi mingled with everyone and was such a sweetheart,” the source said. “She danced on stage with Hanna Beth, drank Red Bull and danced a lot.”

Demi won’t officially turn 19 until Saturday, Aug. 20, which she’ll be spending in Santa Barbara at Kim Kardashian‘s wedding! Not a bad way to spend your last teenage birthday!

Keep it up Demi! We love seeing you sober and happy!

Aimee Curran