Socialite Kim Kardashian has urged bosses of a British airline to step up security after some of her belongings allegedly went missing from her suitcase.

The reality TV star has been in the U.K. and Europe recently promoting her new fragrance "True Reflection," and even put in an appearance at the Cannes Film Festival in France.

She has been accompanied by her boyfriend Kanye West, but her trip ended on a bad note on Sunday when she discovered some items were missing from her luggage - and she has taken aim at British Airways staff in a rant on Twitter.

In a series of posts, she writes, "Very disappointed in British Airways for opening my luggage & taking some special items of mine! Some things are sentimental & not replaceable."

"What happened to the days when you could lock your bags! We need to get back to that. There's no sense of security & no trust! Shame on you."