Louis Tomlinson gatecrashes party, leaves passport behind

Pop star Louis Tomlinson gatecrashed a birthday party in Chicago, Illinois with his rumoured actress girlfriend Danielle Campbell over the weekend (ends20Dec15), and accidentally left his personal belongings behind.

A week after officially kicking off his hiatus from One Direction, Louis paid a visit to Danielle's hometown, with the pair sampling culture in local shops and getting cosy together in an ice cream parlor, according to E! News.

But on Saturday (19Dec15), Louis and Danielle stopped by a friend's 21st birthday party, where the singer happily took pictures with guests, and the snaps were subsequently posted on Twitter.com.

Following the bash, one invitee took to Twitter and posted a picture of herself holding up Louis' passport, writing, "hey @Louis_Tomlinson if ur looking for ur phone, coat or passport my friend Mel has it. U left it at the party LN (last night)."

She updated concerned fans to say his passport & phone were safely back in his hands.

Louis and The Originals actress sparked romance rumours earlier this month (Dec15) when they were spotted on a milkshake date in Los Angeles.

Louis, 23, was recently rumoured to have rekindled his romance with Los Angeles-based stylist Briana Jungwirth, the mother of his unborn baby, after flying her out to London in September (15) for a One Direction gig at the city's O2 Arena, but it appears that is no longer the case.