Kim Kardashian West and Rita Ora came face-to-face on a flight to London.

The 'Keeping Up with the Kardashians' star was reportedly forced to share the first class cabin with her nemesis while en route from Los Angeles International Airport (LAX) on Monday (01.09.14) after she refused to sit next to the British star at the MTV Video Music Awards (VMAs) on August 24.

A source told gossip website that the 'I Will Never Let You Down' hitmaker, 23, arrived for the flight approximately 30 minutes before Kim, 33, who was accompanied by her rapper husband, Kanye West, and their 14-month-old daughter, North.

The reality TV star asked producers at the MTV VMAs to find her a different seat at the event last week, as she didn't want to sit beside Rita, who she allegedly blames for causing her brother, Rob Kardashian, to become depressed following their messy split in 2012.

The sock designer - who has since gained 75 pounds - previously claimed the blonde beauty forced him to keep their romance a secret and later accused her of cheating on him with 20 different men.

The 27-year-old star vented his heartbreak on Twitter at the time, writing: ''She cheated on me with nearly 20 dudes while we were together... But I mean 20?!!!! (sic)''