Some say that being jet lagged can make you do some crazy things!
Justin Bieber recently traveled overseas to the UK, where he was seen arriving back at his hotel in London - and he certainly got the ladies all riled up.
The now 19-year-old singer, who was celebrating his big birthday, was seen coming back after his gig in Birmingham wearing no shirt while heading in for the night.
Sporting along with his no shirt look, the Biebz sagged his jeans, showing some of his underwear hanging out the back.
It looks like Justin has been hitting the gym a lot harder than before, since he was all toned up from the last time we've seen him shirtless.
You can count on his Beliebers losing their minds now!
Check out the gallery to see a shirtless Justin in London.