Reality TV star Khloe Kardashian has slammed rumours that she and estranged husband Lamar Odom are rekindling their romance.

Khloe posted a cryptic message on Twitter, saying people involved in former relationships can be friends as well, reports aceshowbiz.com.

"Wtf is wrong with people? People should praise kindness. Not question it," she tweeted.

The reconciliation rumours emerged after Khloe was spotted boarding a private jet from here to New York with Odom.