Justin Bieber reportedly celebrated his 20th birthday with family.

The pop star said goodbye to his teenage years on March 1. And UK newspaper The Mirror reports it was a rare low-key day for the embattled singer.

According to the outlet, Justin’s dad, Jeremy, flew to see his son at his new home in Atlanta, Georgia, and brought along his half-siblings, five-year-old Jazmyn and four-year-old Jaxon.

Jeremy later took to Twitter to congratulate Justin on the milestone.

"Happy Birthday son. Wow 20!" he wrote.

Justin’s mother, Pattie Mallette, who split from Jeremy when Justin was young, also chimed in.

"Happy Birthday YOU KNOW WHO! I love you. Xoxo,” she wrote.

Justin responded to the message with a smiley face.

According to The Mirror, Justin is planning to party with his friends before a scheduled court hearing next week. The singer is facing charges of driving under the influence, driving with an invalid licence and resisting arrest stemming from an incident in Miami, Florida in January.

The singer is also facing an assault charge in Toronto, where he recently handed himself in following claims he struck a limousine driver on the back of the head multiple times en route to a nightclub.

Jeremy has meanwhile come under scrutiny in recent weeks amid reports he’s become a bad influence for his son.

The patriarch was reportedly present when Justin was arrested in Miami, and according to CNN, the Federal Aviation Administration is investigating reports the pair interfered with crew on a charter flight from Canada to New Jersey in January.

The outlet also reports Justin still faces a possible vandalism charge amid accusations he threw eggs at his neighbour’s home in Calabasas, California, causing an estimated $20,000 in damage.