March 01, 2018 04:50 PM

Justin Bieber has many reasons to love himself on his 24th birthday. The superstar singer has his relationship with on-off love Selena Gomez back on (a PDA-packed) track, plus he has beloved family and plenty of friends to help him celebrate.

Exiting his impressive Lamborghini ride on Thursday, the birthday boy looked relaxed and loose — with pants to match. His low slung pants and exposed boxers left little to the imagination. Is it too late to say sorry to anyone walking behind him? Perhaps, but it’s his party and he can do what he wants to!

Justin Bieber

The Biebs spent the last night of his 23rd year attending a church service at the Saban Theatre in Los Angeles Wednesday evening. A source tells PEOPLE he arrived separately from Gomez, who has been a frequent worship companion as of late.

Celebrities pals took to social media to send their well-wishes to the pop titan, including Chance the Rapper, Ellen DeGeneres, John Mayer, Gomez and even Star Trek icon William Shatner.

RELATED: Selena Gomez Wishes ‘Super Cool’ Justin Bieber Happy Birthday on Instagram with Sweet Polaroid

His longtime manager and confidant Scooter Braun also paid tribute, sharing a video of Bieber performing a goofy impromptu song about the wonders of sleeping and waking. “Happy birthday to the guy who always puts a smile on my face with our crazy weird strange humor,” he captioned the clip. 

And of course, Bieber’s parents added their voices to the chorus. Mother Pattie Mallette shared a cute throwback baby photo of an adorably concerned Biebs with the caption: “Who said you could grow up so fast?”

Father Jeremy, who bonded with Bieber during his wedding to Chelsey Rebelo a few weeks back, sent a birthday hug across the social media airwaves.

Jeremy and new stepmom Rebelo also have an extra special present for Bieber this year — a baby sibling! Just days after the wedding, the proud papa-to-be made the big announcement by sharing a shot on social media of a bikini-clad Rebelo displaying her bump amid a picturesque natural landscape.

RELATED VIDEO: Justin Bieber Was a Proud Groomsman at Father’s Wedding: ‘Most Amazing Day,’ Says New Stepmom

“My beautiful wife and….” he captioned the sweet photo.

Though the couple have yet to announce the sex of the child themselves, TMZ reports that Rebelo is 16-20 weeks along with a baby girl. This will be Bieber’s third sibling after his father’s children Jaxon, 8, and Jazmyn, 9.

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