Selena Gomez Reunited with Justin Bieber at 21st Birthday!

Though Selena Gomez turned 21 on July 22, she celebrated her age milestone this past Saturday night. And none other than Justin Bieber apparently showed face at her bash.

According to People, Gomez’s on-again, off-again boyfriend popped up around midnight at her gypsy-themed birthday party, which was held at Malibu’s Revolve Beach House. Some of Gomez’s birthday party guests included Julianne Hough and her brother DerekNina Dobrev, and Will Smith’s son, Jaden.

“When Selena's song 'Birthday' came on, all of the guests gathered on the dance floor and took shots of chilled VeeV," a source told People.

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