Justin Bieber fans think they've figured out why he sang half-naked at Grammys

Justin Bieber made his momentous return to the Grammys last weekend for the first time in years, where he was up for multiple awards.

Bieber hasn't been at the Grammys since 2022. He rocked up to the star-studded affair four years ago in an oversized blazer and pink beanie hat alongside his wife Hailey Bieber.

The couple have arguably kept a much lower profile since but are dipping their toes back into the spotlight following the success of Justin's latest albums 'SWAG' and 'SWAG II'.

This year, he was up for Pop Solo Performance, R&B Performance, Best Vocal Album, and Album of the Year.

While he went home empty-handed, he still managed to get people talking with his 'YUKON' performance after taking to the stage in just his boxers.

Justin Bieber was just in his boxers and socks when he performed at the Grammys (Kevin Winter/Getty Images for The Recording Academy)

Justin Bieber was just in his boxers and socks when he performed at the Grammys (Kevin Winter/Getty Images for The Recording Academy)

Viewers were somewhat confused at the singer's choice of attire (or lack of, should we say).

One person asked on Twitter: "Why is Justin Bieber singing in underwear?"

"I’m peeing myself why is Justin Bieber standing there with his gym shorts and socks singing this song rn," said another.

But rather than having seemingly forgotten his top and trousers, people think there was a more calculated reason why he decided to perform half-naked.

Eagle-eyed viewers spotted that the boxers he was wearing were SKYLRK – the singer's own clothing brand.

SKYLRK does indeed sell boxer shorts (with different colors being sold in packs of three), but the lavender underwear he was wearing on Sunday aren't available on his website.

Currently ,the set of three white boxers are still available online but the other sets have sold out.

It's likely the socks Justin was wearing were also SKYLRK, something else which has sold out online.

Justin quietly launched his fashion brand, which specializes in basics, last July. The site sells anything from $250 jeans to $80 slides. According to The New York Times, within minutes of his Grammys performance, many items online sold out.

It's since been speculated that Justin's boxers and socks worn on Sunday could be a teaser of what's to come for SKYLRK. Talk about marketing 101.

The singer's boxers were from this clothing brand, SKYLRK (John Shearer/Getty Images for The Recording Academy)

Away from Justin revealing all on stage, another look that really got people talking at the Grammys was Chappell Roan's dress that left very little to the imagination.

The dress, thought to be a Thierry Mugler inspired dress from his Spring/Summer 1998 collection, appeared to be held up by nipple piercings.

Roan's make-up artist has since confirmed that the nipples were prosthetic.