Justin Bieber and Shawn Mendes are takin' each other to church as they both take self-described mental health breaks ... which upended their individual tours.
The pop singers, who have a ton in common, worshipped together Wednesday night at Churchome in Bev Hills. It's unclear if they sang inside -- Justin has in the past -- but we're sure there wouldn't be any pushback from the congregation if they did.
After the church service wrapped up, Shawn hopped into Justin's ride and they left the church together.
As we've reported ... Shawn canceled his world tour back in July, telling fans "It has become more clear that I need to take the time I've never taken personally, to ground myself and come back stronger."