Kourtney Kardashian angered by plane passengers.

Kourtney Kardashian took to Twitter to vent her frustration at her fellow passengers on a flight back from Mexico after they apparently disciplined her children.

The 'Keeping Up with the Kardashians' star took to
the social networking site after someone criticised told one of her kids to ''cover'' their mouths on a flight from Mexico to the US.

The 34-year-old beauty - who has two children Mason, four, and 18- month-old Penelope, with her long-term love Scott Disick - tweeted: ''People on airplanes are so wild these days.

Telling other people's children to cover their mouths.

Cover YOUR mouth. (sic)'' Luckily, the incident was soon forgotten as Kourtney's sister Khloe posted a cute snap of her kids on Instragram
later on.

The photo showed Mason cupping babyPenelope's face with the caption reading ''perfection'' underneath.

Kourtney and her businessman boyfriend Scott have been together since 2007 and are very proudto be parents.

Scott, 30, previously said: ''Having two kids is, like, you couldn't be more legit. It's the real deal: Kourtney and I are Mom and Dad.''