The 32-year-old socialite, who was at the Cannes Film Festival in France with boyfriend Kanye West, discovered some items were missing from her luggage on returning home, reported Daily Star.
"Very disappointed in British Airways for opening my luggage & taking some special items of mine! Some things are sentimental and 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," she posted on Twitter.