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Selena Gomez, Birthday

Michael Simon/startraksphoto.com

UPDATE: E! News has learned that Selena Gomez's big birthday bash, which was produced by Flaming Flower Productions, included belly dancers, mermaids swimming in a pool, a contortionist, tarot card readers and henna artists for guests to enjoy!

Party goers also snacked on Moroccan finger food by Haute Chefs like lamb kabobs and phyllo pies with spinach. There was also a photobooth by Shutterbox at the swanky affair—with a copy of the photos going into a book for Gomez to keep as a memory of her special night.

Gomez's birthday cake by Cake Divas was an incredible 3-tiered chocolate cake with créme filling. It was adorned with jewels and an amazing painted peacock with an elephant on top.

"She was dancing all around," an insider tells E! News. "Everyone was having a really great time."

________

Gomez has her own band of gypsys!

After a week of festivities, Julianne Hough and Nina Dobrevhelped Gomez continue her 21st birthday celebration by hopping on a party bus en route to a gypsy-themed shindig at the Revolve Beach House in Malibu Saturday night.

And it looks like Justin Bieber was also there to party the night away with his ex-ladylove.

Justin Bieber

FAMEFLYNET

The "Boyfriend" crooner was snapped arriving at the event with his friends and bodyguards in his cheetah print Audi R8 last night. 

And when the party ended at about 2 a.m., the Biebs was spotted getting in the same car as the Spring Breakers star. 

A source tells E! News the on-again, off-again couple spent the night together at Bieber's home in Calabasas, Calif.

Interesting.

Julianne Hough, Selena Gomez, Party

Instagram

Meanwhile, Hough and Dobrev were busy showing off their gypsy transformations for the party in super-cute Instagram snaps.

Rocking glitzy head scarves and baring their stomachs in bedazzled tops in the photos, Hough and Dobrev made sure to look the part for the songstress' celebration. 

Last week, Gomez helped Hough ring in her birthday, showing off her devilish side at the Safe Haven star's Great Gatsby themed 25th birthday bash at Cicada restaurant and bar in Los Angeles July 20. 

Here's to being young, wild and free! 

(Originally published July 28, 2013, at 9:00 a.m. PT)