The 29-year-old pop star strutted her stuff down the runway Thursday night in Milan but was booed loudly by a large group of photographers. 

Apparently, everyone was upset because she delayed the show due to her late arrival. The singer showed up at 8:55pm when the show was set to begin right at 8pm. 

"You're all going ot get your picture, so shut the f--k up," the Dark Horse singer shouter as the boo's from the audience grew louder. 

Watch the video footage below *Warning: Explicit Language*